CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Main CFD Forum (http://www.cfd-online.com/Forums/main/)
-   -   mixing length model (http://www.cfd-online.com/Forums/main/5001-mixing-length-model.html)

mukkarumhussain August 5, 2002 01:17

mixing length model
 
Hi, In mixing length model eddy viscosity is propotional to mean fluctuating velocity, but mean fluctuating velocity is always zero. So every time eddy viscosity is zero but it is not the real case.I am not right but what is correct plz tell me thanks

Dean August 5, 2002 14:21

Re: mixing length model
 
This seems to be a case of confusion caused by imprecise use of jargon. The mean fluctuating velocity is zero, but what goes into the mixing length model is some measure of the magnitude of the fluctuations, such as the root-mean-square average.

mukkarumhussain August 6, 2002 01:02

Re: mixing length model
 
what do you mean by "caused by imprecise use of jargon" can you tell me what is the mixing length, characteristic length and characteristic velocity


All times are GMT -4. The time now is 06:53.