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-   -   Turbulence integral lengthscale and mixing-length (http://www.cfd-online.com/Forums/main/3871-turbulence-integral-lengthscale-mixing-length.html)

Ray September 7, 2001 06:55

Turbulence integral lengthscale and mixing-length
 
Dear all,

Any one has idea of the differences between turbulence integral lengthscale and mixing-length scale?

Thanks!

Ray

Christophe September 12, 2001 19:51

Re: Turbulence integral lengthscale and mixing-len
 
Hi,

I'm afraid I lost the sole reference I could read as a successfull comparison between the two, although the integral length scale was a custom one (out of the top of my head.)

Briefly: mixing-length is calculated from RA flow velocity gradient, and distance to the wall (1D), while the integral length scale is calculated from fluctuating properties (but you might know it already.)


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