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-   -   Specifying turbulent intensity (http://www.cfd-online.com/Forums/fluent/36821-specifying-turbulent-intensity.html)

ken June 1, 2005 20:50

Specifying turbulent intensity
 
hi I'm simulating turbulent flow in a rectangular channel with a circular inlet. Physically, the circular inlet allows connection to a pipe/tube.

The fluid is conveyed either by a positive displacement screw pump or a diaphragm pump. My question is, what turbulent intensity and length scale shoud I specify?

us June 1, 2005 22:37

Re: Specifying turbulent intensity
 
I think it's appropriate to use Intensity and Hydraulic diameter option to specify turbulence boundary quantities. You know the hydraulic dia. and turbulent intensity is roughly equal to 4 for Reynolds number of 50000. Regards, -US

ken June 1, 2005 22:46

Re: Specifying turbulent intensity
 
Thanks. Is there a relation between inentsity and Re? My Re ranges from laminar to 12,000.

pUl| June 2, 2005 01:28

Re: Specifying turbulent intensity
 
http://www.fluentusers.com/fluent61/...e178.htm#26307

ken June 2, 2005 01:34

Re: Specifying turbulent intensity
 
I'm not a registered user... can't register as I'm not the license admin...

pUl| June 2, 2005 02:40

Re: Specifying turbulent intensity
 
Check your email.

ken June 2, 2005 02:50

Re: Specifying turbulent intensity
 
Thanks!


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