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-   -   problem with cell in fluent (http://www.cfd-online.com/Forums/fluent/124077-problem-cell-fluent.html)

jason feng September 26, 2013 19:42

problem with cell in fluent
 
1 Attachment(s)
Hi, everyone,

I am using fluent to simulate 2D heat transfer problem. I assigned materials to different parts, when I click on the "contour of thermal conductivity" I found something strange. Even there is gradient in thermal conductivity in one of the cells. (Please see the picture attached). I used triangular cell in mesh. Please help me with this problem, I am stuck on this problem for so long time, thanks so much.

A CFD free user September 29, 2013 15:51

Quote:

Originally Posted by jason feng (Post 453804)
Hi, everyone,

I am using fluent to simulate 2D heat transfer problem. I assigned materials to different parts, when I click on the "contour of thermal conductivity" I found something strange. Even there is gradient in thermal conductivity in one of the cells. (Please see the picture attached). I used triangular cell in mesh. Please help me with this problem, I am stuck on this problem for so long time, thanks so much.

Maybe False diffusion. Try to refine the meshes in those area. a more accurate discretization scheme might help as well.

jason feng September 29, 2013 23:30

Thanks for your reply. But it seems not a pro of discretization, I tried to refine the mesh, but failed to get rid of this prob. Thanks anyway.

Vidyanand Kesti September 30, 2013 01:23

can you attach the mesh picture as well residuals


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