Temp-dependent properties update

SepeHr · September 10, 2015, 13:33

I have a forced convection case with temperature-dependent fluid properties, defined as polynomials. At a certain point during the solution, I would like to "freeze" the property field (e.g. density), i.e. prevent the solver from updating the temp-dependent properties, while proceeding with iterations for the governing equations. Does anybody know if there is a way to do this in FLUENT?

Bruno Machado · September 11, 2015, 07:14

since you have a dependence on the temperature your density will be non uniform all over your domain. unless you define an average for it and change it manually from polynomial to constant, I don't think there's any other way to do it.

September 10, 2015, 13:33	Temp-dependent properties update	#1
SepeHr New Member Sepehr Mohaddes Join Date: Aug 2009 Posts: 3 Rep Power: 16	I have a forced convection case with temperature-dependent fluid properties, defined as polynomials. At a certain point during the solution, I would like to "freeze" the property field (e.g. density), i.e. prevent the solver from updating the temp-dependent properties, while proceeding with iterations for the governing equations. Does anybody know if there is a way to do this in FLUENT?

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September 11, 2015, 07:14		#2
Bruno Machado Senior Member Bruno Machado Join Date: May 2014 Posts: 271 Rep Power: 12	since you have a dependence on the temperature your density will be non uniform all over your domain. unless you define an average for it and change it manually from polynomial to constant, I don't think there's any other way to do it.