How to set phase dependent turbulence models?

August 28, 2002, 12:21

Hi, everyone,

I got information from CFX 5.5.1 manuals that I can set different turbulence model for different phases. But I find the only place I can select the turbulence model for the phases is Domain/Fluid Models form. But I can not select the turbulence model for each phase seperately. Can anyone can help me?

Following is the text from CFX Manual:

<body bgcolor="#00000" text="#111111">Phase-Dependent Turbulence Models

All models available for single-phase calculations are also available for multiphase calculations. It is even possible to use different models in different phases. For example, a recommended model for dilute dispersed two-phase flow uses a k-e model for the continuous phase, and an algebraic eddy viscosity model for the dispersed phase, which simply sets the dispersed phase viscosity proportional to the continuous phase eddy viscosity. </body>

August 29, 2002, 12:47

Hi, when you have more than 1 domain fluid selected on the Domains form, one of the turbulence model options on the Fluid Models form will be Fluid Dependent Turbulence Model. Select this option. On the Fluid Details form you will then be able to set a different turbulence model for each phase. If you have a Dispersed Phase you should use the Dispersed Phase Zero Equation model. Hope this helps.

August 29, 2002, 15:39

Thanks, Michael. Yes, it is there.

J.Yang

August 29, 2002, 12:47	Re: How to set phase dependent turbulence models?	#2
Michael Guest Posts: n/a	Hi, when you have more than 1 domain fluid selected on the Domains form, one of the turbulence model options on the Fluid Models form will be Fluid Dependent Turbulence Model. Select this option. On the Fluid Details form you will then be able to set a different turbulence model for each phase. If you have a Dispersed Phase you should use the Dispersed Phase Zero Equation model. Hope this helps.

August 29, 2002, 15:39	Re: How to set phase dependent turbulence models?	#3
J.Yang Guest Posts: n/a	Thanks, Michael. Yes, it is there. J.Yang

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to show the transient case?	H.P.LIU	Phoenics	7	July 13, 2010 04:31
Incompressible Turbulence models	achinta	OpenFOAM	4	May 27, 2010 10:35
【Discrete Phase Method】about the turbulence kinetic energy	charlesluan	FLUENT	0	April 22, 2010 07:21
turbulence models?	haider	FLUENT	0	March 7, 2006 23:58
Env variable not set	gruber2	OpenFOAM Installation	5	December 30, 2005 04:27

August 28, 2002, 12:21	How to set phase dependent turbulence models?	#1
J.Yang Guest Posts: n/a	Hi, everyone, I got information from CFX 5.5.1 manuals that I can set different turbulence model for different phases. But I find the only place I can select the turbulence model for the phases is Domain/Fluid Models form. But I can not select the turbulence model for each phase seperately. Can anyone can help me? Following is the text from CFX Manual: <body bgcolor="#00000" text="#111111">Phase-Dependent Turbulence Models All models available for single-phase calculations are also available for multiphase calculations. It is even possible to use different models in different phases. For example, a recommended model for dilute dispersed two-phase flow uses a k-e model for the continuous phase, and an algebraic eddy viscosity model for the dispersed phase, which simply sets the dispersed phase viscosity proportional to the continuous phase eddy viscosity. </body>