CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Turbulence Intensity (http://www.cfd-online.com/Forums/fluent/48947-turbulence-intensity.html)

Michael August 4, 2008 00:39

Turbulence Intensity
 
Hey, i'm modelling a turbulent flow past a circular cylinder and am unsure on what to set the turbulence intensity at the Re number i am using for the flow is 10,000. Can someone please help?

Cheers.

venkatesh August 4, 2008 01:34

Re: Turbulence Intensity
 
normally u can set it to around 4%.any freestream turbulence decays rapidly and doesnt affect the solution much

mAx August 4, 2008 02:29

Re: Turbulence Intensity
 
Turbulence Intesity = 0.16 x Re**(-1/8)

Michael August 5, 2008 01:02

Re: Turbulence Intensity
 
Cheers thanks for that.

Btw do you also know what i should set my turbulence viscosity ratio as, or should i just leave it as the default value of 10.

Renato Pacheco August 5, 2008 14:22

Re: Turbulence Intensity
 
but in case you are using multiphase flow with different reynolds number, you should get the mean Reynolds???


All times are GMT -4. The time now is 01:01.