effective viscosity in RNG k-e turbulence model

August 19, 2002, 13:29

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, 03:20

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, 13:29	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, 03:20	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

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