How to estimate the Kolmogorov scale in the DNS of boundary layer turbulent flow? -- CFD Online Discussion Forums

January 12, 2011, 03:06	How to estimate the Kolmogorov scale in the DNS of boundary layer turbulent flow?	#1
hadesmajesty Member Edison Join Date: Mar 2009 Posts: 40 Rep Power: 17	I know that the Kolmogorov scale can be calculated from the viscosity and dissipation rate. And the dissipation rate is of order u^3/L, where u is the fluctuating velocity and L is the integral length scale. I know u can be obtained after simulation. However, how to determine L in downstream, wall-normal and streamwise directions? Further, is it possible to estimate u and L in each direction in advance? Thank you. Last edited by hadesmajesty; January 12, 2011 at 03:10. Reason: Display more clearly

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