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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX October 1, 2012, 07:55

Replies: 9 air ideal gas in CFX Pre Views: 7,274 Posted By ghorrocks An additional variable has convection and... An additional variable has convection and diffusion (if you choose the appropriate option). You could link it to a source term for bouyancy but if you want CO2 to affect buoyancy I would instead use...

Forum: CFX September 28, 2012, 07:32

Replies: 9 air ideal gas in CFX Pre Views: 7,274 Posted By ghorrocks Sounds like you need more specific comments... Sounds like you need more specific comments rather than general comments. Can you describe what you are trying to do, and the results you hope to obtain and we can comment on the best way to...

Forum: CFX September 27, 2012, 18:37

Replies: 9 air ideal gas in CFX Pre Views: 7,274 Posted By ghorrocks You have to enable the thermal model, then... You have to enable the thermal model, then specify a gravity vector. Then it uses a boussinesq buoyancy model. You have to do this for ANY buoyancy model. This is where the gravity vector is...

Forum: CFX September 27, 2012, 08:00

Replies: 9 air ideal gas in CFX Pre Views: 7,274 Posted By ghorrocks There are several types of buoyancy model. The... There are several types of buoyancy model. The first is to use a Boussinesq buoyancy model in an incompressible fluid - this is simplest and least accurate. A more accurate approach is to use an...

Forum: CFX September 26, 2012, 18:34

Replies: 9 air ideal gas in CFX Pre Views: 7,274 Posted By ghorrocks Air ideal gas can support all those physics. But... Air ideal gas can support all those physics. But you have to set the models up (eg buoyancy, something to diffuse and a radiation model) to use it.

Showing results 1 to 5 of 5

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