Incompressible flow

Felipe Matos · April 16, 2010, 20:55

Hi

I'm trying to simulate a incompressible steady-state flow inside a cilindrical tube. My regime is laminar, with no heat transfer. However, i'm not finding the compressibilty control, that is normally at Solver Control > Advanced Tab inside the CFX-Pre. Anyone knows how can I force the flow to be incompressible in such situation?

Thanks

ghorrocks · April 18, 2010, 07:20

If you have defined your material density to be a constant the model will be incompressible. Alternately if you turn the heat equation off like you did that will also force it to do an incompressible simulation (unless you defined density as a function of pressure).

April 16, 2010, 20:55	Incompressible flow	#1
Felipe Matos New Member FM Join Date: Feb 2010 Posts: 14 Rep Power: 16	Hi I'm trying to simulate a incompressible steady-state flow inside a cilindrical tube. My regime is laminar, with no heat transfer. However, i'm not finding the compressibilty control, that is normally at Solver Control > Advanced Tab inside the CFX-Pre. Anyone knows how can I force the flow to be incompressible in such situation? Thanks

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April 18, 2010, 07:20		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	If you have defined your material density to be a constant the model will be incompressible. Alternately if you turn the heat equation off like you did that will also force it to do an incompressible simulation (unless you defined density as a function of pressure).