|August 28, 2009, 04:37||
volume heat source
Join Date: Jul 2009
Posts: 2Rep Power: 0
Hello all, I´m a new Star-CD user, can someone help me please? Wich way is the best to enter the volume heat-source in Star-CD? I´m prepairing model of small nuclear reactor, fuel elements I put in like a distributed resistance material. Thank you and sorry for my bad english.
|August 28, 2009, 10:36||
Join Date: Mar 2009
Posts: 185Rep Power: 9
It depends what you are trying to accomplish.
If you are just modeling coolant flow you can apply a heat flux wall boundary. This assumes you have "holes" in your mesh where the fuel rods should be located.
If you are trying to predict temperatures within the fuel rod (conjugate heat transfer analysis with fluid & solid cells), you will need an enthalpy source user subroutine applied to the solid cells.
You mentioned a distributed resistance. Are you using a porous media? Is so, how?
If you have no fuel rod "holes" & are meshing the entire core using porous media, you will need a volume source (enthalpy source user subroutine). I am not sure if you can use enthalpy sources with porous media. (Porous media adds restrictions to your model.)
If you are using porous media with fuel rod "holes", you should carefully consider what is happening at the walls (y+ & it's implications upon heat transfer coefficient calculation.)
|Thread||Thread Starter||Forum||Replies||Last Post|
|how to load the heat source to wall||david yang||Main CFD Forum||1||October 12, 2009 13:34|
|fluent add additional zones for the mesh file||SSL||FLUENT||2||January 26, 2008 12:55|
|heat source UDF error||co2||FLUENT||8||May 18, 2004 07:47|
|UDF Scalar Code: HT 1||Greg Perkins||FLUENT||8||October 20, 2000 12:40|
|UDFs for Scalar Eqn - Fluid/Solid HT||Greg Perkins||FLUENT||0||October 13, 2000 23:03|