since i think there are missing BC, i tried these values and i got almost similar results as in the video: heated pipe inlet (1-6): velocity 0.001 m/s, temperature 400~450 K heated pipe outlet (1-6): temperature 400~450 K inlet: velocity 0.002 m/s, temperature 300 K outlet: temperature 300 K pipe wall, pipe wall shadow, wall fluid domain: material steel
Thank you very much for the great work, just one notice, there're some missing BCs and ICs without definition in the video. and for workbench 17.2 and later version's users, in order to switch off "use advanced size function" you just can choose adaptive from "size function".
There is an video editing error so that the inlet bc for outer domain is missing, the outer domain inlet is "velocity inlet " With value=0.01m/s .Thank you for ur valuable suggestion.
Great tutorial . Well done.A request if you could add a theory slide . You may add it in written format it can help viewers to understand the theory behind the analysis.
Thank you for your video, I have a question, in a closed space, there is an internal heat source (solid), the natural convection problem of the internal heat source, air, what gas should I use, what thermophysical parameters should I use, how to set the boundary conditions of the closed space.Looking forward to your reply.
At first sorry for the late reply, You can assign "in-compressible Ideal Gas" density for better result , You can watch our tutorial on natural convention heat transfer to get an idea about the Boundary conditions and material properties assignment.
I don't understand the pipe wall, two fluid domains must have pipe walls with finite thickness. If we set up the pipe wall like the video, how to understand it with real world problem?
for simplicity and to save the solution solving time, you can neglect the pipe wall thickness. If you want to simulate the real-life problem you can model it, no issue., but you will not get much more variations in result. Try in both cases.
Hello. A very good example, but I did not manage to build velocity vectors in the "Fluid Domain" area (they are simply missing, as if the program does not count them). And the speed of the liquid in the pipes is 0. Version ANSYS 19.
there are two bodies of different materials in contact with each other. One body is heated to a temperature of 200 degrees, and the other 20 degrees. How to make a thermal analysis in ANSYS to look at the temperature distribution and temperature stresses caused by heating a body with a temperature of 20, if a body with a temperature of 200 degrees cools down from contact with a body with a temperature of 20, as well as from contact with the environment?
is there sound on this video? because I can't hear anything. there was a music and it's over at 2:03 and rest of the video is silent. there is no music or talking, explanation..
there is no voice explanation in any of our tutorials, it has been created so that even a non English speaking person can understand it without any language as a barrier. In the tutorial videos it has been provided explanation as text in the section wherever required.,If you are getting any doubt or want any clarification in any section then can comment here ,so that we can able to help you. Thank you for your query.
I know nothing about ansys. I ahve just started to learn it so as you guess i don't know why you doing extrude after sketch1 why not drawing sketch1 and 2 then extrude and other applications. so this is one of them of course. there are a lot of questions like this. I asked for you maybe tell while you are doing these things. somethings can be understood but some of them can't be. whatever i try memorize it :)
Good question Omer, As per your query, you can also do like that by creating two sketches and then extrude. I have created it to illustrate the creation of geometry in a convenient manner. you can also export geometry created in any other CAD designing software into ANSYS. As you are a beginner I will suggest you to go through "Cornell university Ansys and fluent tutorials", and first start from 2D simulations, then after that proceed to 3D problems. So that you can understand the concept behind this clearly. You can also ask in our TH-cam channel discussion page. Thank you
@ 22:13 You set it up inlets 400,410,420 K... but mine values were 300 K and i changed it to yours values but you didn t show the outlets values in the video and mine were again 300 K. so i changed them to 410,420,430 K ...then i calculated it but mine velocities showed different values (dark blue and light blues) i guess z velocities and energy lines. i guess mine startup settings were diffrent.
Check the flow model, whether its Inviscid or laminar or turbulent. if it is inviscid then change it to laminar/ turbulent. If this is not the problem then check the cell zone condition, and check whether the flow domain are assigned as fluid or not.
Can you kindly suggest that, If we use a condensate pump at the exit of anair heat exchanger, which will only get activated if a certain pressure (above atmosphere) is reached, then what exit boundary condition we can use ? The pressure at the exit drops below atmospheric, But the condensate pump only gets actuated after a certain pressure at exit is achieved.
Also if I am modelling an assembly(radiator) in Solidworks then imports it in ANSYS. The design modeller is unable to create a fluid domain(since ANSYS is reading parts as surface bodies instead of solid bodies). Can you please suggest some change and improvement ? Thanks
Its was our initial video, in which I dont know much about editing and youtube. So this video is like that. Hope you would understand. Please watch our recent videos and give your valuable feedback.
Thank you for your query, The inlet boundary condition for the outer fluid domain is "velocity inlet ", with velocity=0.002m/s , this was missing in the video ,due to some video editing error. we are sorry for that. Hope this will resolve your question.
I have some issues with my simulation, in BC menu there are three contact regions which are set to interface. and also there are six walls with heat flux set to zero.(I did the simulation with 3 tubes) unfortunately there is no "coupled" option for walls. how can I resolve this problem?
You had skipped one important step, i.e making all the tubes into one part. This will result a conformal mesh & you will not get any other extra walls, but remember to do named selections of parts so that you can assign the material in the cellzones.
Dear, Thank you for your contribution. I have two questions. 1. Why do not you use interface? and 2. Shell conduction only is apllied to pipes wall or wall fluid domain also? Thank for your time. And as suggestion, a example of heat conduction :)
interface modelling can be neglected if it do not affect the solution significantly.You can assign shell conduction if you have not modeled the walls in the geometry.,
'it's very helpful tutorial!! I have a question. In mesh part, when I finished everything and save it, an error has occurred"The mesh file exporter failed during translation. Please send your data to your support provider." And warning "All cell zones in Fluent may be automatically set to Fluid". How can I solve this problem? For your information, I used the 18.2 version.
Just ignore this warning, this generally comes if you have not assigned the domains as solid /liquid in the geometry modeling part (design modeler).This will not affect the result. The most important part is the assigning the solid /liquid domain in fluent cell zone . The error might you getting regarding failed mesh is due to the mesh restrictions if you are using a student version of ANSYS. If in your work ,no of elements are more than 5120000 then I will suggest to first reset the mesh and again mesh it with a large size cells so to get less elements.
Thank you!! However when I reset the mesh and again mesh it with a large size cells(Nodes, Elements : about 90,000 in statistics), errors has occurred "The mesh file exporter failed during translation. Please send your data to your support provider." I also assigned liquid domain in fluent cell zone.
i tried plotting the velocity ans streamline ...it performs the calculations ..but i dont get to see the colorful plots on the screen ......how to get them
Can you share the contour plot with us so that I can tell you where you are wrong, you can join our telegram group for discussion. Or can send me via email or in facebook.
you can assign the "coupling" Boundary condition, in pipe wall , in this video due to some editing issue the pipe wall BC assignment is missing, sorry for that.
Sir, you have mailed me the save file of cross flow heat exchanger that i had request. But it shows that the project was saved with a future version of the product and cannot be opened. Can you please tell me which version you saved this file? I am using ansys 16.0
@@AnsysTutor can I please share that model with you, is there any email id... I really need a tutorial for it in fluent so that I can end my project, please
amazing tutorial, but i would like some complexity like, the heater is a copper pipe(most of the time) so add him into the problem and if i have convection and conductivity(as a real problem) how do i do? thanks a lot
for this you need to select the mixed Boundary condition option in which you can assign the Convective heat transfer coefficient , Free stream temperature etc, also if you want to put emissivity you cal also assign that, for conduction you need not select any thing it will be calculated if you had selected the Energy equation option.
buddy am facing the same problem but my bigger domain is a circular pipe that is crossed by other little tubes. you think that is better to change the circular domain to a rectangular domain with the same hydraulic diameter?
no its not necessary to change the geometry, if its not required for your problem, I want to ask you what kind of problem are you facing in the current circular pipe setup?
Hi everyone, my simulation does not converge after 1000 iterations, which I do wrong?. heated pipes 0.001 m/s T from 400K to 450K, other fl 0.02 m/s T=300k. Ok writing this I found the error, the velocity is 0.002 m/s, It converges after 200 iterations. Super thanks for the tutorial. PD Where do you use steel material? Why do not you use gravity? It is possible to apply a BC into the external fluid domain 1 of type shell wall with an imposed heat transfer coefficient? (sorry I'm cfd beginner)
gravity generally applicable for problems in which there is a much variations in working fluid density, in the current case the variation is negligible, with gravity also you will get the same result .
I can see "Reverse Flow" while you run calculations. Do you think that it will affect your Results? I saw many people on CFD Forums discussing about the Reverse Flow as it is an error/inaccuracy. It is not fully converged. I am new with CFD. So, your response will be highly appreciated! Thank you!
Yes reverse flow affects the solution ,try to avoid the reverse flow warning , but if its still present after a lots of iterations, and your result coming approximately same then no need to worry about reverse flow.
not all solution need to be converged always , you can make the convergence very fast /delay by changing the convergence criteria. The iteration graph and results should be satisfactory .
Thank you for your reply with detailed information. Indeed, this is really helpful to me. Your tutorials are amazing which helped many of us. Really appreciate it!
i want to simulate conduction heat transfer from electric resistance to pipe, i´m using heat flux boundarie condition to know how many power do i need to reach 500K on pipe, im just setting value on heat flux (w/m2) but i´m setting wall thickness (m) and heat generation rate (w/m3) with 0. is that right ? do you have some suggest ?
as its a constant heat source the heat generation cant be 0, please check and provide the heat generation value. wall thickness does not matter if you have created the wall in the geometry already.
I am using PCM material inside the pipes... So along with PCM liquid factor ...I am getting pipewall liquid factor... Though it should be 0 ..I am getting it as 0.7 . Can u please say where did I do mistake
there is one big problem, you didn't apply a proper boundery condition for hp wall. if it's set by default to zero heat flux, the whole simulation is wrong, since there won't be any heat transfer.
@@AnsysTutor you know, i repeat all you operations, and still have no result. I'll try to do something different from your videos, and, after, i'll try to repeat this lesson again. Thank you!
Should the cad model be a solid or surface? will a mix of both work. I am not able to define well the inlet and outlet in my similar geometry. Please help. Thanks
yes,one part. it has tubes as well as a box which they are inside of. trying a solar pv back panel cooling simulation with the pipes carrying the fluid to take away the heat.
you can assign the wall thickness on the pipe wall, in wall Boundary condition, in this video due to some editing issue the pipe wall BC assignment is missing, sorry for that.
As per my knowledge, there is no way to vary the numbers of fins as operating parameters. You have to create separate geometries with different nos of fins for such type of parametric analysis.
@@anzamanhossen4249 you can check the facet average, or surface integral of the pipe outlet . You can get these options in the results section->surface Results
Dear ansys tutor, I am facing problem for fluid flow in cutting tool, can I share my problem of model with you please ? I can mail the images of my model and you can verify the problem. I really need help of someone experts like you. waiting for your response. Thank you !!
for solving heat exchange three models are available they are dual cell model ,macro model (grouped ungrouped) after turning on the energy equation u can see heat exchanger below radiation or check this linkwww.afs.enea.it/project/neptunius/docs/fluent/html/ug/node508.htm
OK Now I get that , we will upload a video tutorial regarding the dual cell heat exchanger model in the next month . And will discuss regarding the various heat exchanger models available. Thank you for your query.
Global range means the total domain maximum to minimum results, which includes the temperature ranges of inner and outer domain , and local range means max and min range value of only a single pipe.
add frozen keeps the domain as a different entity (multiple parts), but in add material, the newly created domain becomes single entity (single part) with the previously created domain.
Hi , I have followed all the steps exactly as the video . But when I initialize the solution , an error message appears " Flow Boundary zone found adjacent to solid zone, This problem must be fixed before solution proceeds" Could you please tell me how to resolve this issue ?
@@AnsysTutor i needed to analyse heat transfer of fluid flowing in holes in a copper block with one side of copper block heated.....what are the changes i must do in this?
Are you getting the results? if the results are perfect then no need of convergence as your convergence value might be less.You can also increase the convergence criteria if you want the solutions to be converged fast ,just observe the iteration graph and do according to that.
Thank you for your help , I stopped the simulation after 1000 itr, imgur.com/nZf4sNk But I didnt get any results , there wasnt any heat exchanging . imgur.com/IPg8twl I thought maybe I did something wrong during the selection , and I rechecked that but everything was right imgur.com/sPPkazj I have been trying to resolve this for hours , but I cant find what I did wrong..
Are you stopping the calculations? If you are doing so then after stoping the solution , give only one iteration and calculate it, let the fluent show:"calculation complete". Then save the solution and go for results analysis. Hope this might be helpful if this is not the case then let me know.
Awesome,
You are the only real tutorial of Ansys Flow 3d in all TH-cam.
Thanks
thank you :)
Youre awesome. You wouldn't know how much this has helped me.
Thank You :)))
Hello can i plz ask youa Favor
since i think there are missing BC, i tried these values and i got almost similar results as in the video:
heated pipe inlet (1-6): velocity 0.001 m/s, temperature 400~450 K
heated pipe outlet (1-6): temperature 400~450 K
inlet: velocity 0.002 m/s, temperature 300 K
outlet: temperature 300 K
pipe wall, pipe wall shadow, wall fluid domain: material steel
For microchannel, the dimension should be at range of micrometers, u are using at metres. Why so? or can we easily scale down? Do suggest.
thank you very much!
sorry i wanna ask you, in 30:42 why in my cfd was not showing the streamline after click apply, is there any suggest? thank you
You need to select the surface from where you want the streamline.
Thank you very much for the great work, just one notice, there're some missing BCs and ICs without definition in the video. and for workbench 17.2 and later version's users, in order to switch off "use advanced size function" you just can choose adaptive from "size function".
There is an video editing error so that the inlet bc for outer domain is missing, the outer domain inlet is "velocity inlet " With value=0.01m/s .Thank you for ur valuable suggestion.
what about the temperature for inlet bc for outer domain??
you can just simply keep it as default of 300K
Great tutorial .
Well done.A request if you could add a theory slide . You may add it in written format it can help viewers to understand the theory behind the analysis.
Great suggestion!
Thank you for the incredibly helpful tutorial!
most welcome:)
The video is great but can you explain the theory behind the simulation or is there a link that you can provide that does explain it?
very helpful video... great job .
Thank you.
Hi, I loved your video! Congratulations!!
Thank you:)
Thank you for your video, I have a question, in a closed space, there is an internal heat source (solid), the natural convection problem of the internal heat source, air, what gas should I use, what thermophysical parameters should I use, how to set the boundary conditions of the closed space.Looking forward to your reply.
At first sorry for the late reply, You can assign "in-compressible Ideal Gas" density for better result , You can watch our tutorial on natural convention heat transfer to get an idea about the Boundary conditions and material properties assignment.
plz make Vedio on Geometry Twin screw compressor ..Thanks
Plz share the details of the geometry
@@AnsysTutor Diameter of rotors = 65 mm
Taking l/d ratio = 2.1
Length of rotors = 140 mm
I don't understand the pipe wall, two fluid domains must have pipe walls with finite thickness. If we set up the pipe wall like the video, how to understand it with real world problem?
for simplicity and to save the solution solving time, you can neglect the pipe wall thickness. If you want to simulate the real-life problem you can model it, no issue., but you will not get much more variations in result. Try in both cases.
Suggest a proper meshing type and solver for circular microchaneel
Sweep meshing method would be suitable for your model with ogrid meshing if its a circular microchannel.
@@AnsysTutor from where it is donee??
Meshing of Fluent solver?
Hello.
A very good example, but I did not manage to build velocity vectors in the "Fluid Domain" area (they are simply missing, as if the program does not count them). And the speed of the liquid in the pipes is 0. Version ANSYS 19.
create a new plane at the cross-section(in the CFD- results) where you want the result.
7:18 theres no "Off" options for me buddy Im using Ansys 18 Help Please
use "uniform meshing" option instead.
Thank you so much for the great education effort i hope that you can post us an earth air heat exchanger thanks a lot
Will try to make a tutorial. Thank you.
Pls make vdo on fluide flow through a pipe having internal fins
Watch this th-cam.com/video/9c9H9GVtPwM/w-d-xo.html
what values did you put in "inlet" and "outlet" in boundary conditions"?? I think you have not mentioned that.
Please check the comments, i had already replied regarding the Boundary conditions mistake.
there are two bodies of different materials in contact with each other. One body is heated to a temperature of 200 degrees, and the other 20 degrees. How to make a thermal analysis in ANSYS to look at the temperature distribution and temperature stresses caused by heating a body with a temperature of 20, if a body with a temperature of 200 degrees cools down from contact with a body with a temperature of 20, as well as from contact with the environment?
th-cam.com/video/2sdJdYSNpic/w-d-xo.html
is there sound on this video? because I can't hear anything. there was a music and it's over at 2:03 and rest of the video is silent. there is no music or talking, explanation..
there is no voice explanation in any of our tutorials, it has been created so that even a non English speaking person can understand it without any language as a barrier. In the tutorial videos it has been provided explanation as text in the section wherever required.,If you are getting any doubt or want any clarification in any section then can comment here ,so that we can able to help you.
Thank you for your query.
I know nothing about ansys. I ahve just started to learn it so as you guess i don't know why you doing extrude after sketch1 why not drawing sketch1 and 2 then extrude and other applications. so this is one of them of course. there are a lot of questions like this. I asked for you maybe tell while you are doing these things. somethings can be understood but some of them can't be. whatever i try memorize it :)
Good question Omer, As per your query, you can also do like that by creating two sketches and then extrude. I have created it to illustrate the creation of geometry in a convenient manner. you can also export geometry created in any other CAD designing software into ANSYS. As you are a beginner I will suggest you to go through "Cornell university Ansys and fluent tutorials", and first start from 2D simulations, then after that proceed to 3D problems. So that you can understand the concept behind this clearly. You can also ask in our TH-cam channel discussion page.
Thank you
@ 22:13 You set it up inlets 400,410,420 K... but mine values were 300 K and i changed it to yours values but you didn t show the outlets values in the video and mine were again 300 K. so i changed them to 410,420,430 K ...then i calculated it but mine velocities showed different values (dark blue and light blues) i guess z velocities and energy lines. i guess mine startup settings were diffrent.
Check the flow model, whether its Inviscid or laminar or turbulent. if it is inviscid then change it to laminar/ turbulent. If this is not the problem then check the cell zone condition, and check whether the flow domain are assigned as fluid or not.
Can you kindly suggest that, If we use a condensate pump at the exit of anair heat exchanger, which will only get activated if a certain pressure (above atmosphere) is reached, then what exit boundary condition we can use ?
The pressure at the exit drops below atmospheric, But the condensate pump only gets actuated after a certain pressure at exit is achieved.
Also if I am modelling an assembly(radiator) in Solidworks then imports it in ANSYS. The design modeller is unable to create a fluid domain(since ANSYS is reading parts as surface bodies instead of solid bodies). Can you please suggest some change and improvement ?
Thanks
Import it as iges file format or prt file.
@@AnsysTutor it is not getting imported in prt format and it is still considering the assembly as surface body in iges format.
For the solid, stainless steel, it is not iin fluent database. How to add?
You need to add the material properties manually to any of the default material.
For microchannel, the dimension should be at range of micrometers, u are using at metres. Why so? or can we easily scale down? Do suggest.
For microchannel flow you can scale this geometry in ansys fluent scale option.
@@AnsysTutor where is that option?
Help me out.
What are the initial and boundary conditions missing? I can't seem to find the outer fluid domain.
Thank you
Sorry for that , that was a video editing error .
Hello, thank for the video, I have a question, what should we do in the Inlet boundary conditions? thanks
Provide the inlet flow conditions in inlet boundary. If you dont know the inlet conditions then keep it as "inlet vent" .
@@AnsysTutor thank you, I resolved. Thanks!
thanks so much this video so interested
Thank you 👍🙏
I like your vídeo thanks for sharing!
Thank you.
Is the Video all mute except the music in the beginning? Or am I missing something?
But great video anyway!
Its was our initial video, in which I dont know much about editing and youtube. So this video is like that. Hope you would understand. Please watch our recent videos and give your valuable feedback.
Heated fluid domain will result in overlapping named selection in the mesh
No. Please try to give named selection, by seleting the body option for full domain and only face option for any side wall /face
Thanks and is hp outlet 1-6 pressure outlet or outflow ??
Hello Sir, Can you please make a video on the heat transfer between flue gas and water in a tube ?
Will try to make a tutorial on this.
@@AnsysTutor Thank you.
most welcome :)
What was the input BC at the outer fluid domain?
Thanks
Thank you for your query, The inlet boundary condition for the outer fluid domain is "velocity inlet ", with velocity=0.002m/s , this was missing in the video ,due to some video editing error. we are sorry for that. Hope this will resolve your question.
Thanks! this helped me a lot. Can u tell me why you used Simplec, Green-gauss cell based instead of Coupled, Green-gauss node based?
instablaster...
I have a basic doubt that they didn't apply steel anywhere and how can they get temp profile without conductivity ?
it might be error in video editing sorry for that.
In the residuals graphs, it showed only for energy, not for velocity and mass. How to fix it?
I think you might have selected all as solid domain, so there is no flow. Check once in the cellzone wheather solid or fluid material selected.
I have some issues with my simulation, in BC menu there are three contact regions which are set to interface. and also there are six walls with heat flux set to zero.(I did the simulation with 3 tubes) unfortunately there is no "coupled" option for walls. how can I resolve this problem?
You had skipped one important step, i.e making all the tubes into one part. This will result a conformal mesh & you will not get any other extra walls, but remember to do named selections of parts so that you can assign the material in the cellzones.
@@AnsysTutor many thanks
Dear, Thank you for your contribution. I have two questions. 1. Why do not you use interface? and 2. Shell conduction only is apllied to pipes wall or wall fluid domain also? Thank for your time. And as suggestion, a example of heat conduction :)
interface modelling can be neglected if it do not affect the solution significantly.You can assign shell conduction if you have not modeled the walls in the geometry.,
Thank for your time.
'it's very helpful tutorial!! I have a question. In mesh part, when I finished everything and save it, an error has occurred"The mesh file exporter failed during translation. Please send your data to your support provider." And warning "All cell zones in Fluent may be automatically set to Fluid". How can I solve this problem? For your information, I used the 18.2 version.
Just ignore this warning, this generally comes if you have not assigned the domains as solid /liquid in the geometry modeling part (design modeler).This will not affect the result. The most important part is the assigning the solid /liquid domain in fluent cell zone . The error might you getting regarding failed mesh is due to the mesh restrictions if you are using a student version of ANSYS. If in your work ,no of elements are more than 5120000 then I will suggest to first reset the mesh and again mesh it with a large size cells so to get less elements.
Thank you!! However when I reset the mesh and again mesh it with a large size cells(Nodes, Elements : about 90,000 in statistics), errors has occurred "The mesh file exporter failed during translation. Please send your data to your support provider." I also assigned liquid domain in fluent cell zone.
Check the advanced sizing function in details of mesh make it off.
i tried plotting the velocity ans streamline ...it performs the calculations ..but i dont get to see the colorful plots on the screen ......how to get them
Can you share the contour plot with us so that I can tell you where you are wrong, you can join our telegram group for discussion. Or can send me via email or in facebook.
@@AnsysTutor just sent it over the email bro...kindly plz check and let me know...thanks a ton'
I find myself in a similar situation. I have tried plotting the velocity and streamline and nothing is happening. Please help
What are the thermal boundary conditions for the pipe wall ? On my simulation, the temperature of the pipe wall keeps constant.
you can assign the "coupling" Boundary condition, in pipe wall , in this video due to some editing issue the pipe wall BC assignment is missing, sorry for that.
Extremely sorry for the late reply.
Sir, you have mailed me the save file of cross flow heat exchanger that i had request. But it shows that the project was saved with a future version of the product and cannot be opened. Can you please tell me which version you saved this file?
I am using ansys 16.0
Ansys 2024 R1
Can we simulate for same conditions in fluent, but with different turbulence models (it's laminar in this case) and except the same result?
Yes you can do analysis with Turbulence modeling.
how can make advanced sizing function "off" for custom meshing in ANSYS fluent (17.2) MESHINGICEM CFD
The advance sizing option might not be available in these versions.
i have a circular chamber and i have to heat it from the bottom, should i do it in steady state thermal or in fluent??
do it in fluent if you want the thermal analysis only. If you want structural analysis you can do it in steady state thermal.
@@AnsysTutor can I please share that model with you, is there any email id... I really need a tutorial for it in fluent so that I can end my project, please
mail id: ansystutor7@gmail.com
@@AnsysTutor thank you so much sir for paying attention to my comment, I've mailed you the IGS file of the model. Looking forward for your reply.
amazing tutorial, but i would like some complexity like, the heater is a copper pipe(most of the time) so add him into the problem and if i have convection and conductivity(as a real problem) how do i do?
thanks a lot
for this you need to select the mixed Boundary condition option in which you can assign the Convective heat transfer coefficient , Free stream temperature etc, also if you want to put emissivity you cal also assign that, for conduction you need not select any thing it will be calculated if you had selected the Energy equation option.
buddy am facing the same problem but my bigger domain is a circular pipe that is crossed by other little tubes. you think that is better to change the circular domain to a rectangular domain with the same hydraulic diameter?
no its not necessary to change the geometry, if its not required for your problem, I want to ask you what kind of problem are you facing in the current circular pipe setup?
@@AnsysTutor hello, do u have Facebook fan page? I would like to share a publication with more details
Here is our channel's official Facebook page :facebook.com/ansystutor7
My FB Profile facebook.com/ansys.tutor.33
Hi everyone, my simulation does not converge after 1000 iterations, which I do wrong?. heated pipes 0.001 m/s T from 400K to 450K, other fl 0.02 m/s T=300k. Ok writing this I found the error, the velocity is 0.002 m/s, It converges after 200 iterations. Super thanks for the tutorial.
PD Where do you use steel material? Why do not you use gravity? It is possible to apply a BC into the external fluid domain 1 of type shell wall with an imposed heat transfer coefficient? (sorry I'm cfd beginner)
the pipes are of steel material. sorry for the video editing error.
gravity generally applicable for problems in which there is a much variations in working fluid density, in the current case the variation is negligible, with gravity also you will get the same result .
Is there any video on heat transfer from hot air to solid object
its similar to this only you need to define inlet air temperature .
I can see "Reverse Flow" while you run calculations. Do you think that it will affect your Results? I saw many people on CFD Forums discussing about the Reverse Flow as it is an error/inaccuracy. It is not fully converged. I am new with CFD. So, your response will be highly appreciated!
Thank you!
Yes reverse flow affects the solution ,try to avoid the reverse flow warning , but if its still present after a lots of iterations, and your result coming approximately same then no need to worry about reverse flow.
not all solution need to be converged always , you can make the convergence very fast /delay by changing the convergence criteria. The iteration graph and results should be satisfactory .
Thank you for your reply with detailed information. Indeed, this is really helpful to me. Your tutorials are amazing which helped many of us. Really appreciate it!
dear ANSYS-TUTOR, a unstructed mesh generated from ICEM can not simulate heat transfer?
yes it can, but the result accuracy may differ.
i want to simulate conduction heat transfer from electric resistance to pipe, i´m using heat flux boundarie condition to know how many power do i need to reach 500K on pipe, im just setting value on heat flux (w/m2) but i´m setting wall thickness (m) and heat generation rate (w/m3) with 0. is that right ? do you have some suggest ?
as its a constant heat source the heat generation cant be 0, please check and provide the heat generation value.
wall thickness does not matter if you have created the wall in the geometry already.
Ansys-Tutor thanks my friend
most welcome :)
double pipe heat exchanger ,baffles are placed in side the tubes
plz try this one and upload
ok will try. Thank you for your suggestion.
thank you for your video,what is the condition on pipe wall (the interface between two zones,should be coupled or not)
yes it should be coupled, so there will be heat transfer between zones.
I am using PCM material inside the pipes... So along with PCM liquid factor ...I am getting pipewall liquid factor...
Though it should be 0 ..I am getting it as 0.7 . Can u please say where did I do mistake
You need to create the pipe geometry separately as another part.
So I need not consider this liquid factor. So This way of process is right for pipe filled with PCM..
Is there is any thickness of the pipe or its a zero thickness boundary wall.
@@AnsysTutor shell conduction layer thickness is given as 1 mm
i cant view the colour during results ....after giving streamline in fluid domain
Streamline colour or contour colour, which color are you talking about.
@@AnsysTutor streamline
what should i do?
can we use this for batteryb simualtion
Plz tell little more about the project.
What is the impact of reverse flow in final result. Please comment
Reverse flow will give you a less acurate or sometimes a wrong result.
@@AnsysTutor
What is divergence in amd detected : temperature?
That is divergence error. It means the residuals are increasing as a rapid manner instead of decrease, which it should be.
surface condenser ,2D GEMETRY ,NESH , SETUP SOLUTION, RESULT ....steam and water flow ...plz sir upload this vedio..
stay updated we will do it soon.
ok sir
I m getting only the energy (blue line)graph after running calculation . Please help me for the same
You might have not selected the fluid materials in the cellzones.
Same problem with me too
can u plz try to have tutorial how to find heat transfer coefficient .
thanks a lot ^_^
Ok ,and thank you for ur suggestion.
there is one big problem, you didn't apply a proper boundery condition for hp wall. if it's set by default to zero heat flux, the whole simulation is wrong, since there won't be any heat transfer.
Can you specify the time so that I can clear your query.
Please show the same meshing but in ICEM CFD structer meshing
please help.
somehow "heated piped 1" become "wall" (in boundary conditions). how can i remake it to "velocity-inlet"?
You need to change the boundary type from "wall" to "velocity inlet" in boundary conditions.
@@AnsysTutor you know, i repeat all you operations, and still have no result.
I'll try to do something different from your videos, and, after, i'll try to repeat this lesson again.
Thank you!
@@АлександрАлексеев-у5е have you created all the bodies into a single part for conformal meshing?
@@AnsysTutor yes, of course.
Sir results ko validate bhi kia krein with numerical problem
Should the cad model be a solid or surface? will a mix of both work. I am not able to define well the inlet and outlet in my similar geometry. Please help. Thanks
Have you created the total geometry in a different cad software?
yes. completely in Solidworks 2015.
Are you making it to one part?
yes,one part.
it has tubes as well as a box which they are inside of. trying a solar pv back panel cooling simulation with the pipes carrying the fluid to take away the heat.
Donot make it one part . Create it as an assembly of many parts. If it is possible then please create the geometry in Ansys design modeler itself.
Sir,its a very informative and helpful tutorial.I want to ask some questions regarding the geometry.can u plz help me by answering those questions.
DEAR SIR,
COULD YOU PLEASE SHARE THE CAD FILE ON THIS PROJECT!
I WILL BE DEEPLY THANKFUL TO YOU! PLEASE PLEASE SIR
Mail us on ansystutor7@gmail.com
How are you specifying the wall thickness of the tubes?
you can assign the wall thickness on the pipe wall, in wall Boundary condition, in this video due to some editing issue the pipe wall BC assignment is missing, sorry for that.
Can you help me please to simulate bubble column?
Thanks u , nice video
You are most welcome.
amazing, friend can u do that with cfx ?!!! pls make that with cfx
Thank you:) Stay updated ,we will soon start CFX tutorials.
@@AnsysTutor thank u so much if include this geometry for heat transfer it will be so helpful, again thank u so much for hard works
how can I get the amount of heat tranafer in my result?
You can check in the results, if you want to see heat flux or volumetric average heat tranfer from any surface.
Dear Sir
Thanks alot
You are Most welcome.
I want to make the number of pins a parameter.is there a way to make parameter of number of pins instead of pattern command.?
As per my knowledge, there is no way to vary the numbers of fins as operating parameters. You have to create separate geometries with different nos of fins for such type of parametric analysis.
OK thank you Sir
the temperature at the tube outlet .. how much is it?
It's different for different tubes. As the inlet temperatures are not same in all .
@@AnsysTutor how can i calculate outlet temperature?
@@anzamanhossen4249 you can check the facet average, or surface integral of the pipe outlet . You can get these options in the results section->surface Results
Dear ansys tutor,
I am facing problem for fluid flow in cutting tool, can I share my problem of model with you please ? I can mail the images of my model and you can verify the problem. I really need help of someone experts like you. waiting for your response. Thank you !!
yes please send it to our mail : ansystutor7@gmail.con
You forgot to specify the inlet velocity of the cold fluid
There is an video editing error so that the inlet bc for outer domain is missing, the outer domain inlet is "velocity inlet " With value=0.01m/s.
Ansys-Tutor thank you
Which software used for it.plz tell me
its ANSYS Fluent.
Walls boundary conditions?
Can you share the exact question of this video with dada
It's a cross flow heat exchanger. You need to find out the temperature changes due to the heat interaction between the pipes.
Massa! Muito obrigado!!!
De nada
Can i get the link for geometry please
Sorry,dont have the geometry file.
@@AnsysTutor ok
How to Side dual call model for heat exchanger
Sorry not Side its use
can you please describe a little bit about this, I am unable to get what you want to know.
for solving heat exchange three models are available they are dual cell model ,macro model (grouped
ungrouped) after turning on the energy equation u can see heat exchanger below radiation or check this linkwww.afs.enea.it/project/neptunius/docs/fluent/html/ug/node508.htm
OK Now I get that , we will upload a video tutorial regarding the dual cell heat exchanger model in the next month . And will discuss regarding the various heat exchanger models available. Thank you for your query.
thanks for the positive reply hope u will get back soon with the video
@Ansys-Tutor
With what respect is the 'Global' range? Please tell me what exactly happens when you change Global to Local.
Global range means the total domain maximum to minimum results, which includes the temperature ranges of inner and outer domain , and local range means max and min range value of only a single pipe.
Thank You
why you are naming each pipe inlet and outlet individually, when you can select all pipe inlet and name it "heated pipes inlet"?
If you want to modify any one pipe, you can modify it individually. If you select all as inlet, the result would be a collective one.
@AnsysTutor ok
can you tell me how to calculate nusselt number of crossflow heat exchanger?
Thank you sooooooooo much
You are most welcome.
i need help please 'how to heat oil in cup'
you need to define Properties of oil, define the Boundary conditions on the wall, like what is the heat input , heat flux or temperature.
what add frozen command do
add frozen keeps the domain as a different entity (multiple parts), but in add material, the newly created domain becomes single entity (single part) with the previously created domain.
Ansys-Tutor thanks bro
Hi… I need help please… l do not know how to draw cone hollow from inside and this cone is connected to duct ?? Is any body help me
First draw the sketch as one side view of a cone(Like "A") then make it a surface and revolute it around an axis.
Hi , I have followed all the steps exactly as the video .
But when I initialize the solution , an error message appears " Flow Boundary zone found adjacent to solid zone, This problem must be fixed before solution proceeds"
Could you please tell me how to resolve this issue ?
Please check the cell zone condition, you might have assigned the fluid domain as " Solid"
Thanks a lot , problem solved
I have some doubt in the project......can you plz send the file in email?
Sorry, we dont have the file . What is your query please ask .
@@AnsysTutor i needed to analyse heat transfer of fluid flowing in holes in a copper block with one side of copper block heated.....what are the changes i must do in this?
Can you give the save file of this Design?
Yes, mail me on ansystutor7@gmail.com
@@AnsysTutor i have already mailed. Can you check?
Sir can you send me this file for my project work?
Please send us mail on ansystutor7@gmail.com
Ok check you mail
can i please have the file for this?
Mail us on ansystutor7@gmail.com
ANSYS SUMULATION OF Flat plate collector with reflector.
yes please
did you ever manage to find one for a flat place collector?
Hello sir I have emailed you regarding if i can have the file of this, thanks a lot!
Hi
do you know where i can get ansys for free?
you can visit ansys website ,from there you can get ansys academic version for free.
www.ansys.com/en-in/academic/free-student-products
NICE
Thank you.
thank you
You're welcome
Hey , I tried following the tutorial but my solution never converage , I dont know whats the problem. Im using ansys 18.2 imgur.com/a/wLn0X
Are you getting the results? if the results are perfect then no need of convergence as your convergence value might be less.You can also increase the convergence criteria if you want the solutions to be converged fast ,just observe the iteration graph and do according to that.
Thank you for your help , I stopped the simulation after 1000 itr,
imgur.com/nZf4sNk
But I didnt get any results , there wasnt any heat exchanging .
imgur.com/IPg8twl
I thought maybe I did something wrong during the selection , and I rechecked that but everything was right
imgur.com/sPPkazj
I have been trying to resolve this for hours , but I cant find what I did wrong..
Are you stopping the calculations? If you are doing so then after stoping the solution , give only one iteration and calculate it, let the fluent show:"calculation complete". Then save the solution and go for results analysis. Hope this might be helpful if this is not the case then let me know.