RNG k-epsilon details

zese · March 27, 2022, 04:29

Hi every one

I am using RNG k-epsilon method for my simulation as it is good for swirling flows. In the description of the model, in Ansys manual, it says that eddy viscosity is modified by the following formula:

nu_t=nu_t0*f( $\Omega$ , $\alpha$ ,k/ $\epsilon$ )

but I cant find the f formula. do you know what is its function?

BR

arjun · March 27, 2022, 05:37

I looked for it in the documents going back to version 5.5 and this particular detail is never mentioned. So it is one of those things we will never know.

Quote:

Originally Posted by zese

Hi every one

I am using RNG k-epsilon method for my simulation as it is good for swirling flows. In the description of the model, in Ansys manual, it says that eddy viscosity is modified by the following formula:

nu_t=nu_t0*f( $\Omega$ , $\alpha$ ,k/ $\epsilon$ )

but I cant find the f formula. do you know what is its function?

BR

March 27, 2022, 04:29	RNG k-epsilon details	#1
zese Senior Member Zese Join Date: Sep 2013 Posts: 102 Rep Power: 12	Hi every one I am using RNG k-epsilon method for my simulation as it is good for swirling flows. In the description of the model, in Ansys manual, it says that eddy viscosity is modified by the following formula: nu_t=nu_t0*f( $\Omega$ , $\alpha$ ,k/ $\epsilon$ ) but I cant find the f formula. do you know what is its function? BR

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