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-   -   Why engineers always prefer to use FEM for heat transfer modeling (http://www.cfd-online.com/Forums/main/107834-why-engineers-always-prefer-use-fem-heat-transfer-modeling.html)

Anna Tian October 7, 2012 17:29

Why engineers always prefer to use FEM for heat transfer modeling
 
Hi

May I ask why engineers always choose FEM method to simulate the flow when they more care about heat transfer? Why not FVM?

Thanks!

cdegroot October 8, 2012 00:42

Quote:

Originally Posted by Anna Tian (Post 385382)
Hi

May I ask why engineers always choose FEM method to simulate the flow when they more care about heat transfer? Why not FVM?

Thanks!

Is that true? I'm not sure. The ANSYS codes are very popular for heat transfer and are both finite volume codes (Fluent is pure FV whereas CFX is a volume based code that uses FE shape functions for interpolations). Which codes are you thinking are popular with engineers doing heat transfer simulations?

mettler October 9, 2012 10:50

I would think it is because FEM is similar to nodal analysis, which is typically for heat transfer. That would be my guess..:)

cdegroot October 9, 2012 15:08

Maybe for conduction problems where you are solving a diffusion problem which is similar to stress analysis for which there are many FEM codes available. For convection-diffusion problems I still feel like FVM is more popular.

mettler October 9, 2012 15:12

I definitely agree that FVM is more popular for CFD. But, for heat transfer I would go with FEM..it's a lot easier to write FEM code for heat transfer than it is FVM. But, if the heat transfer involves fluid flow, then FVM would be the way to go in most cases.


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