thannnnnnnnnnk you sooooooo much brother you saved me from failing semester project your method helped me a lottttttttttttttttttttttttttttttttt thank u so much
Hello CFD Analysts. Thanks for all the response and support. However, 92.16% of viewers have not yet subscribed to this channel. Please consider subscribing for more such new CFD videos. Also, don't forget to comment on your favorite part of the video below and suggest topics on which you want videos in the future.
The lift and drag force calculated in the video is for half wing or for the full wing, as symmetry is used. If one wants to calculate lift and drag coefficient from the generated lift and drag force, what will be the span length (3 m or 1.5 m).
Hello, you are doing great job for beginner like me. Thank you so much. I wanted to ask about how can I calculate lift and drag with different angle of attack ? Can you please tell me from where I can change angle of attack ? Thank you so much again.
One way is to use and vary the x, y and z components of the inlet velocity and use the sine and cosine of the angle of attack - there will be other ways but that is the easiest way I have discovered (but I am only just beginning with CFD so who knows !!)
Another easy way is to directly change the angle of your airfoil in design modeller by going in create > body transformation > rotate. After rotation you can create enclosure and follow rest of the steps as shown in video. Hope that helps you. Keep sharing and supporting.
so you dont have to do this on the solution tab where you create a graph for whatever you want, you just calculate the problem and you can do this on the result-post processing part ? the number it shows you for the force, is calculated for 200 interations as well ?
Hello. Number of iterations depends upon when we achieve convergence. We can say convergence is achieved when all the residual values are below 1e-03 in most of the CFD simulations.
How you saved the file as stp? I cant find that format. Is it okay to continue working on the existing drawing from part 1 and continue the the part video without importing it again as stp file?
Hello, Thanks for this video. I am studying the flow around a 3D wing and would like help with the reference values to be specified in Ansys Fluent. I know the area is the top surface of the wing, the length is that of the chord. But my problem is that the chord is not constant all the way down the wing (the chord at the root is bigger than the salmon one). How can I specify the chord in this case, please ?
Hello Brudhel, Reference area = chord length x third direction. However if your chord length is varying then you can try to specify mean or average of chord length for your calculations and see if it matches with experimental data (if any). Hope this helps you.
Thank you for this video. I am working on simulation of NACA 0018 airfoil our drag force value is 11.54 N but the value of Lift Force is 0.75N. If you can help me in this regard it will be helpful for me.
Hello. I think it means that your wing is causing more drag than lift. This maybe due to geometry error or very coarse mesh or inappropriate enclosure size or boundary conditions.
I know this comment is old but NACA0018 is an asymmetrical airfoil (that's what these two zeros mean), so if the angle of attack is low this value might be correct
Cool video. You helped me a lot! There is a question - if we have a plane of symmetry and half of the wing is involved in the calculation, then the lift is the entire wing or half?
I am glad you found it helpful. Lift is only for half wing if you simulate symmetric model. Multiply the lift value by 2 to get lift for full wing. I hope this helps.
You can calculate the CL and CD value by going to reports > forces in FLUENT. Then select the correct direction vectors for lift and drag force directions and press compute. At the right side of the console window, you will be able to see the value of CL and CD getting printed.
2 ปีที่แล้ว
@@cfdbabaopenfoamansyscfd2972 CL and CD calculating dont understand :(
Hello, thanks for the tutorial, it was really helpful for me! I have a question: how do we come back to the whole model? (What is shown at the end of the video is half of thw wing, since we are working beyond the symmetry plane only) I would like to examine the pressure distribution on the wing, streamlines and velocity vectors around the wing, but not in half wing, I want to have the complete wing. Should I go back to design modeler and not using the half of the wing, but the complete wing? Thank you so much in advance.
Just skip the symmetry operation in the design moduler and import the full model with the fluid domain and use the section plane option in the mesher for selecting the wing faces inside the flow domain
Hello sir make a complete video from geometry designing to post processing in ansys fluent so that it would be very helpful to others student who are beginners. Make a complete videos related to NACA Aerofoil only sir I'm waiting for that and also how to take a values I'm ms excel and how to plot in note pad also because many student don't know they are just started to study or they don't know anything about CFD.
Hello. This video is part 2. If you check part 1 that is the previous video, you will find all the things you requested in that video. th-cam.com/video/t4iCiliEru4/w-d-xo.html Here is the link to that video. Enjoy. Keep sharing and supporting.
Seems like you don't have any knowledge about meshing. Where's your near wall refinements? No inflation layer, yet you're selecting k-omega SST? Do you know the required y+ value for this model? And how many layes you should generate? And do you have any idea about RANS model selection criteria? Do a little research first before making any tutorial video.
Hi. No need to be so aggressive. We all are humans and we all can improve. I know about all the things that you have mentioned. This is just Level 1 playlist for beginners. Hence I haven't considered the more detailed aspects of inflation and y+ value. The main purpose of this tutorial is to make beginners familiar with the workflow of setup for aerodynamic simulation of a simple wing. You can expect more detailed tutorial which will fulfill all your demands in near future.
A really useful video series going through the whole process of using ansys - well done CFD Baba
Glad it was helpful! Keep sharing and supporting.
thannnnnnnnnnk you sooooooo much brother you saved me from failing semester project your method helped me a lottttttttttttttttttttttttttttttttt thank u so much
Thanks CFD BABA, Videos are clear for learning how to use the software.
I am glad you liked it. Keep sharing and supporting.
This video save my Lab Report, very useful and well explained
Great to hear! Keep sharing and supporting.
Thanks for your help. This video was really helpful.... Baraka Allahu fik😉
Glad to hear that.
Thanks for the nice in-depth tutorial. subscribed.
Glad it was helpful!
Excellent explanation & very informative... keep it up.
Thank you, I will
Really helpful, I hope you upload more videos like this, and please do it frequently!!
Thanks a lot for your comment. More videos to come! That's the plan! Keep sharing and supporting.
Another great video, Thank you!!
You are always welcome. Don't forget to share with all your friends.
thank u so much this was very helpful for my school assignment
Glad it helped! Keep sharing and supporting.
Hello CFD Analysts. Thanks for all the response and support. However, 92.16% of viewers have not yet subscribed to this channel. Please consider subscribing for more such new CFD videos. Also, don't forget to comment on your favorite part of the video below and suggest topics on which you want videos in the future.
I SUBSCRIED BRO
@@조바이든-r6r Thanks a lot. Keep sharing with all your fellow CFD engineers and keep supporting.
The lift and drag force calculated in the video is for half wing or for the full wing, as symmetry is used. If one wants to calculate lift and drag coefficient from the generated lift and drag force, what will be the span length (3 m or 1.5 m).
Hello. You can calculate the lift and drag values for the half wing and just multiply them by 2 to get lift and drag values of the full wing.
How to apply dynamic meshing using udf to similar simulations
I have to simulate an oscillating 3d wing
Can you help please?
sir how can we find forces at different angle of attacks. please reply 🙏
How do I analyze the resonant frequencies experienced by a steel cylinder under water flow?
how do we calculate lift and drag coefficents then? should use lift and drag formulas?
yes
Hello, you are doing great job for beginner like me. Thank you so much. I wanted to ask about how can I calculate lift and drag with different angle of attack ? Can you please tell me from where I can change angle of attack ? Thank you so much again.
One way is to use and vary the x, y and z components of the inlet velocity and use the sine and cosine of the angle of attack - there will be other ways but that is the easiest way I have discovered (but I am only just beginning with CFD so who knows !!)
@@jamesrand9778 thank you so much
Another easy way is to directly change the angle of your airfoil in design modeller by going in create > body transformation > rotate. After rotation you can create enclosure and follow rest of the steps as shown in video. Hope that helps you. Keep sharing and supporting.
so you dont have to do this on the solution tab where you create a graph for whatever you want, you just calculate the problem and you can do this on the result-post processing part ? the number it shows you for the force, is calculated for 200 interations as well ?
Hello, I have a question about iteration. Why did you set 200? On what basis do we choose iteration? Thank you.
Hello. Number of iterations depends upon when we achieve convergence. We can say convergence is achieved when all the residual values are below 1e-03 in most of the CFD simulations.
one or more entities failed to mesh error what can i do for it
How you saved the file as stp? I cant find that format. Is it okay to continue working on the existing drawing from part 1 and continue the the part video without importing it again as stp file?
hi just wanna ask if the wing have winglet how to select the inner side? its hard for me to select
Hello,
Thanks for this video. I am studying the flow around a 3D wing and would like help with the reference values to be specified in Ansys Fluent. I know the area is the top surface of the wing, the length is that of the chord. But my problem is that the chord is not constant all the way down the wing (the chord at the root is bigger than the salmon one). How can I specify the chord in this case, please ?
Hello Brudhel,
Reference area = chord length x third direction.
However if your chord length is varying then you can try to specify mean or average of chord length for your calculations and see if it matches with experimental data (if any). Hope this helps you.
Hello@@cfdbabaopenfoamansyscfd2972
Thanks for your response. I have not yet experimental results, but I will try your suggestion.
@@brud_action did you finish ?
Thank you for this video. I am working on simulation of NACA 0018 airfoil our drag force value is 11.54 N but the value of Lift Force is 0.75N.
If you can help me in this regard it will be helpful for me.
Hello. I think it means that your wing is causing more drag than lift. This maybe due to geometry error or very coarse mesh or inappropriate enclosure size or boundary conditions.
Same problem
I know this comment is old but NACA0018 is an asymmetrical airfoil (that's what these two zeros mean), so if the angle of attack is low this value might be correct
Cool cool cool! Subscribed.
Thanks a lot for your feedback. It made my day. Keep sharing and supporting.
hi.. just want to ask.. for 12x8x1 square domain with around 620.000 cells, is it enough? i mean i really confuse with this meshing :') thank you
Hi. Final mesh is good or bad depending on its quality. Skewness should be below 0.9. I hope this helps.
Cool video. You helped me a lot! There is a question - if we have a plane of symmetry and half of the wing is involved in the calculation, then the lift is the entire wing or half?
I am glad you found it helpful. Lift is only for half wing if you simulate symmetric model. Multiply the lift value by 2 to get lift for full wing. I hope this helps.
@@cfdbabaopenfoamansyscfd2972 thanks.
A very helpful tutorial thank you, can do one for FSI tutorial.
Great work
Glad it helped you.
Really appreciated
Thank you for give this explanation sir, i need complete cfd tutorial using ansys, I interest to learn, can you help me sir.
Thanks it's working
Which processor are you using sir,core I?
Hi. I am using i5 7th Gen processor.
I want the report of the above experiment
How can I calculate CL and CD?
You can calculate the CL and CD value by going to reports > forces in FLUENT. Then select the correct direction vectors for lift and drag force directions and press compute. At the right side of the console window, you will be able to see the value of CL and CD getting printed.
@@cfdbabaopenfoamansyscfd2972 CL and CD calculating dont understand :(
hello, i have a question guys
how can i calculate lift and drag if i have angle of attack? how can I set the correct direction?
Directions dont change
Correct. Drag is in direction of air flow. Lift is in direction opposite to gravity.
Hello, thanks for the tutorial, it was really helpful for me!
I have a question: how do we come back to the whole model? (What is shown at the end of the video is half of thw wing, since we are working beyond the symmetry plane only) I would like to examine the pressure distribution on the wing, streamlines and velocity vectors around the wing, but not in half wing, I want to have the complete wing.
Should I go back to design modeler and not using the half of the wing, but the complete wing?
Thank you so much in advance.
Sorununu çözebildin mi
@@fatihc.4301you can mirror it.
Just skip the symmetry operation in the design moduler and import the full model with the fluid domain and use the section plane option in the mesher for selecting the wing faces inside the flow domain
Thanks you very much
Any time
What does it mean when residuals are "vibrating" in the chart? The values goes down, but it started to get some spikes.
sir can you make video tutorial for drag analysis ship with mutiphase
Hello. I will try to do it in near future. Keep sharing and supporting.
Good video
This is a wing or aerofoil.
Pelase clear my doubt.
An airfoil is just the (flat) crossection of a wing. This here is a wing as it has 3 dimensions
Hi, is this real analysis?
Where is the ribs, where is the spars?
Are this parts isn't importantm
Hello sir make a complete video from geometry designing to post processing in ansys fluent so that it would be very helpful to others student who are beginners. Make a complete videos related to NACA Aerofoil only sir I'm waiting for that and also how to take a values I'm ms excel and how to plot in note pad also because many student don't know they are just started to study or they don't know anything about CFD.
Hello. This video is part 2. If you check part 1 that is the previous video, you will find all the things you requested in that video.
th-cam.com/video/t4iCiliEru4/w-d-xo.html
Here is the link to that video. Enjoy. Keep sharing and supporting.
6:00
ty
Op 💪
Yo ma man!
Hey bro can you do analysis of our project we will pay for you
Yeah I can look into it. Mail me at cfdbaba@gmail.com
are there any other useful videos please ?
Yes. You can checkout the playlists on my TH-cam channel for more CFD tutorials.
Bina accent ke baat kar lo bhai, kuch kharab nahi hoga.
Seems like you don't have any knowledge about meshing. Where's your near wall refinements? No inflation layer, yet you're selecting k-omega SST? Do you know the required y+ value for this model? And how many layes you should generate? And do you have any idea about RANS model selection criteria? Do a little research first before making any tutorial video.
Hi. No need to be so aggressive. We all are humans and we all can improve. I know about all the things that you have mentioned. This is just Level 1 playlist for beginners. Hence I haven't considered the more detailed aspects of inflation and y+ value. The main purpose of this tutorial is to make beginners familiar with the workflow of setup for aerodynamic simulation of a simple wing. You can expect more detailed tutorial which will fulfill all your demands in near future.