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Properties of steady states of turbulent channel flows

[ jeudi 22-11-2007 12:00 | anglais ]Properties of steady states of turbulent channel flows Marco COGONI LML
Résumé :
Various properties of the steady states observed in turbulent channel flows are investigated by means of statistical mechanics. Since these systems are not at thermodynamical equilibrium, we exploit their conserved quantities to obtain relations linking vorticity and velocity fluctuations depending on the Reynolds number. Comparison of direct numerical simulations and experimental PIV with respect to theory are performed showing a good qualitative agreement. Possible application of the methods to other systems is discussed.