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Numerical error at false diffusion case

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Old   January 28, 2015, 06:18
Exclamation Numerical error at false diffusion case
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JPeternel
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Hi!

I set up this case to check how openfoam deals with false diffusion.

However, there appeared a strange thing: in upper right corner there are some serious
temperature fluctuations on the area 6x6 cells, independent of the mesh refinement level.

The flow has direction of (1,1,0) and domain is 2D.

Has anybody an idea why this happens?

Photos:
https://onedrive.live.com/embed?cid=...A6FoODEJOpoeZc

Chears,
Jaka
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false diffusion, numerical error, upper right corner

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