effective viscosity in RNG k-e turbulence model

August 19, 2002, 12:29

Hi,

I need to calculate the effective viscosity when using the RNG k-e model, and I have two questions:

1. A differential equation for the effective viscosity calculation is provided in Yakhot's paper where the origin of the RNG k-e model was discussed, but I found that the formulation of this equation is different from the one that's given in Fluent manual. I don't know why and which one is correct.

2. In the equation provided by Yakhot, the value of a constant C is not given explicitly. I found it might be 75, but not sure.

Could someone please give me an answer to these? I'd appreciate it very much.

Ellen

August 20, 2002, 02:20

Try to contact the author, Alex Yakhot.

The following is his homepage and e-mail address:

http://www.bgu.ac.il/me/staff/yakohot.html

e-mail: yakhot@bgumail.bgu.ac.il

August 19, 2002, 12:29	effective viscosity in RNG k-e turbulence model	#1
Ellen Guest Posts: n/a	Hi, I need to calculate the effective viscosity when using the RNG k-e model, and I have two questions: 1. A differential equation for the effective viscosity calculation is provided in Yakhot's paper where the origin of the RNG k-e model was discussed, but I found that the formulation of this equation is different from the one that's given in Fluent manual. I don't know why and which one is correct. 2. In the equation provided by Yakhot, the value of a constant C is not given explicitly. I found it might be 75, but not sure. Could someone please give me an answer to these? I'd appreciate it very much. Ellen

August 20, 2002, 02:20	Re: effective viscosity in RNG k-e turbulence mode	#2
Rami Guest Posts: n/a	Try to contact the author, Alex Yakhot. The following is his homepage and e-mail address: http://www.bgu.ac.il/me/staff/yakohot.html e-mail: yakhot@bgumail.bgu.ac.il

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Modified k-e turbulence model UDF	Travis	Fluent UDF and Scheme Programming	7	November 11, 2018 20:21
Water subcooled boiling	Attesz	CFX	7	January 5, 2013 03:32
Power - Law Viscosity Model for Polymers	NickolasPl	OpenFOAM	2	August 12, 2011 08:26
question about turbulence model selection and sensitivity	karananand	Main CFD Forum	1	February 26, 2010 04:41
Regarding Implementation of Hershel Bulkley Model in Viscosity correlation	Pathak	FLOW-3D	0	August 24, 2009 06:34