Re, Convection Coefficient and Nusselt No. Calculations in ANSYS Fluent
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- เผยแพร่เมื่อ 21 ก.ค. 2019
- This tutorial was about fluid flow within a circular tube; you will learn in this video:
1- How to make a special mesh for the case considered.
2-How to set up ansys fluent for required calculations.
3- How to calculate Reynolds number, convection coefficient and Nusselt number.
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The expressions appeared in the tutorial were listed below:
Re=(997 [kg/m^3]*0.05 [m]*areaAve(Velocity)@inlet )/0.000891 [kg/m/s]
h=areaAve(Surface Heat Transfer Coefficient)@fully_developed
Nu=(h *0.05 [m])/(0.607 [W/m/K])
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Also; to download the geometry file, please click on the following link:
drive.google.com/file/d/1Q8Xv...
![[CFD] Heat Transfer Coefficient (htc) in ANSYS Fluent, OpenFOAM and CFX](http://i.ytimg.com/vi/PuTl98d0iZ0/mqdefault.jpg)
Thank you for very detailed explanation!!
A very well explained tutorial sir....
hello. which ansys version are you using in this video? I'm using 19.2 and I dont have most of the things you have in mesh menus
thanks dude.... superbly done....
Its really commendable and it simplified the method of numerical analysis, especially calculation of Nu and h in Post-processing module. However, I observed the turbulence intensity you calculated is 0.0464 and it should be inputted as %, so it suppose to 4.64, not 0.0464. once more congratulations and thank you for enlightening us.
Good job Sir. What kind or model of computer are you working on?
Do you know how to calculate the production of entropy to a rotating impeller?
thank u sir please do the same example for CFX solver
Hello Mr Saud T
would you tell me how can i extract correct Nusselt number from Fluent
i'm working on flat plate solar collector 3D
Thank you
can we use K-omerga model in this case ?
can you explain reference values a little bit ? you put 0.5m length as it is the length of turbulent region, bur your entry length is also 0.5, so how would Fluent differentiate in this ?
I am using Ansys student version 2020
In the meshing module , I am not able to find relevance , face size and bunch of other options . Is there any way to activate these options ???
Please let me know . It would be very helpful for my project.
Can we use inflation in laminar flow? if we can, how to calculate the first layer thikness and layer number?
hello can you explain the processor to the sherwood number?
How many cells/nodes did u use ??
this tutorial is very useful for me. but sir i want know .how to put surface heat transfer coefficient term while writing expression for heat transfer coefficient...
Can we use this method for air also
why did u change area and length in refrence values although you selected inlet. im following you as it is but i didnt changes my refrence values and the im getting 94.30 surface heat transfer cofficient instead of 1773 like yours. why u did thta so plz explain
Please make their downloadable versions available!
I clicked on the link you have provided, it is saying that the file is missing, make sure you have entered correct url.
The CFD wont recognize "Surface Heat Transfer Coefficient" in the equation
h=areaAve(Surface Heat Transfer Coefficient)@fully_developed
Is there any solution for this ?
u didnt add data quantities in run calculation option
@@iqballawservice even after adding it is not showing. i ran it several times
@@sharmeenmoona2886 madam ap nay hamain tag Kia but yeh hamari video nahi hai
hey did u find any solution for this? im getting this error too
[ Fluent setup>File>Preferences>Genereal>Default format for I/O>Legacy ] worked for me.
Good day.. thanks alot . Pls can you assist me on how to calculate and plot nusselt number for natural convection heat Transfer
can we exchange information i have some questions please
Hey, if it is possible, can u simulate nusselt number for fully developed velocity and temperature profile for circular tube for uniform wall heat flux boundary condition, as it constant 4.367. thanks in advance
Bro did u find any good videos for this case?
why use y+=1?
google drive link not working
sorry but i saw that you substitution in Dittus equation is wrong the nusselt is 131 not 138 as u said
Yes, it is 131
your file to download does not exist anymore.
sir how to download cadd file...
hi
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thank you very much sir,
can i get your mail?
Your Reynolds number is coming with unit while it's dimensionless quantity. The equation you're using for Reynolds number you have missed the unit of viscosity , change it to kg/m/s.
The units hasn’t missed but written in as kg/m*s which is wrong so it has been corrected in the expression at the description of the video. Thanks for noting that.
@@Saudaljadir ok, it's just the software got that wrong lol
@@Saudaljadir can you help me to contour plot the nusselts number distribution on any surface?
@@Saudaljadir where can i find the file to download the geometry. that link does not get us to the file to download. please suggest
thanks, sir for all those, it is great ...
when I wanna know the temperature value at in the selected point from my geometries, for example at any point on the centerline ?
please help me >>>>>>>>> or send me your mail address>>>>>>>?