|April 13, 2013, 15:37||
Choosing turbulence parameters
Join Date: Oct 2010
Posts: 303Rep Power: 9
Which approach is better for the turbulence conditions - eddy viscosity ratio, intensity If we don't know what values to use.
Either inputting some values that suit the physics (or) Using expressions
to gather them as the solution progresses for instance - volumeAve(eddyviscosityratio)@DomainName
|April 14, 2013, 07:17||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 12,638Rep Power: 98
This question seems to miss the point a bit. For the common 2 eqn turbulence models you have two terms to define - a turbulence energy component (ie have intense the turbulence is) and "something else", where the something else could be a length/time scale, dissipation rate or something else.
So you need to define these two parameters for turbulence. Then just define them in the way which matches what you are trying to model best.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Turbulence dampening due to magnetic field in LES and RAS||eelcovv||OpenFOAM||0||June 8, 2010 11:35|
|High turbulence intensity||wenfengxie||FLUENT||1||April 16, 2010 12:00|
|question about turbulence model selection and sensitivity||karananand||Main CFD Forum||1||February 26, 2010 05:41|
|Centrifugal Pump and Turbulence Model||Michiel||CFX||12||January 25, 2010 04:20|
|Turbulence model parameters||Vidya Raja||FLUENT||2||October 6, 2006 13:38|