Local isotropy in turbulent shear flow

Stanley Corrsin
naca-rm-58b11
May 1958


The main strain rate in turbulent shear flow must tend to make the structure anisotropic in all parts of the spectrum. It is argued here, however, that, if the spectral energy transfer process destroys orientation, the Kolmogoroff notion of local isotropy can still be justified in spectral regions where the local transfer time is shorter than the characteristic time of the gross shear strain.

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