muEff and mut/sigmat
 

Hi all,

I have a simple question to the following two codes:

I know that muEff = mu_laminar + mu_turbulent. So I thought that in the first code line I am calculating the diffusion term just with the turbulent diffusion and the laminar diffusion is neglected. sigma_t is the turbulent prandtl number = 1

In the second code therefor I am using both of them to calculate the diffusion coefficient.


It would be very useful for me!
Thanks in advance

Regards Tobi

Solved my problem!

Hi Tobias,

I also have this question. Could you help?
1. Does this muEff mean mu_laminar + mu_turbulent?
2. Why the sigma_t is the turbulent prandtl number? I thought it should be "Prt" in the code.

Thanks a lot!

Hi Sibo

Although, you have asked Tobias, however, since he is asleep. I am answering you:D:D

1)yes you are correct.

muEff = mu_laminar + mu_turbulent

2) It depends on the code. I am aware of some codes that they use sigmat for turbulent Prandtl number.
Always you can change the variable if you don't like it

Regards

Hi Babak,

Thanks for the help!