how to calculate Turbulent Length Scale
Could any one please guide me on how to calculate the turbulent length scale in external flow..While doing komega turbulent modeling I chose Turbulent Intensity and Turbulent Length Scale Option. i enter the turbulent intensity about 0.07%. Please Help me in this regard. Thanks in Advance :)

In the article by Lutz and al (AIAA J, Vol.45(4), p.779, 2007), among others, you can find an approximate formula combining different results from isotropic turbulence, Von Karman spectrum, etc... It reads:
L = 0.387*(k_t^(3/2))/epsilon. You can also get from this the outer integral scale (or characteristic length of energy bearing eddies) as: Lambda = L/0.7468 (See the book by Mathieu and Scott, Introduction to Turbulent Flow, 2000) Hope this helps. 
ok thanks a lot of for your suggestion mr frank..

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