Asymmetric time correlations in turbulent shear flows
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Cross correlations between normal and downstream velocity fluctuations in a turbulent shear flow are shown to carry information about the non-normal amplification process. The creation of spanwise modulated streaks by downstream vortices implies an asymmetry in temporal correlation functions. We verify this in numerical simulations in shear flows with $Re_λ\approx 100$.
4 pages, 2 figures, Will be published as part of IUTAM meeting 2002
4 pages, 2 figures, Will be published as part of IUTAM meeting 2002