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-   -   Applying Heat Flux out of the surface in CFX (http://www.cfd-online.com/Forums/cfx/27070-applying-heat-flux-out-surface-cfx.html)

Ijaz February 25, 2009 20:32

Applying Heat Flux out of the surface in CFX
 
How can we apply negative heat flux on a wall boundary in CFX?

Rikio February 25, 2009 21:04

Re: Applying Heat Flux out of the surface in CFX
 
Ljaz´╝î

You can set lower environment temperature to let heat flow out of the wall boundary... Wish help...

Rikio

Ijaz February 26, 2009 01:06

Re: Applying Heat Flux out of the surface in CFX
 
Thanks Rikio. The temperature at the boundary in question is not uniform. Therefore, applying a convective heat transfer coefficient in conjunction with a lower environment temperature would not ensure the flux value that I want to apply. I have tried applying a negative heat flux, but it results in non-physical results. In a software like CFX, there must be a way to apply negative flux. I would appreciate any suggestions from some experienced user.

Glenn Horrocks February 26, 2009 17:33

Re: Applying Heat Flux out of the surface in CFX
 
Hi,

CFX can handle negative heat fluxes just as well as positive ones. Sounds like you either have an inaccurate simulation or the negative heat flux you applied is non-physical.

Glenn Horrocks


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