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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???


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