PMID: 11909238Mar 23, 2002Paper

Scaling of structure functions in homogeneous shear-flow turbulence

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
J Qian

Abstract

We apply spectral dynamics and non-Gaussian statistical model of velocity difference to study the scaling of structure functions in homogeneous shear-flow turbulence. Let L(S) be the shear length scale and eta the viscous scale. It is found that, when L(S)/eta is finite, due to a combined effect of viscosity and mean shear, the scaling deviates from normal scaling, and the deviation increases as L(S)/eta decreases. In the presence of a strong shear (L(S)/eta<100), the deviation is substantially larger than the prediction of typical intermittency models, in agreement with recent experiments. As L(S)/eta-->infinity, the normal scaling is valid in the inertial range where viscous and shear effects are negligible.

References

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Feb 1, 1996·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·P TabelingH Willaime
May 4, 1992·Physical Review Letters·P KailasnathG Stolovitzky
Sep 6, 2000·Physical Review Letters·F ToschiG Ruiz-Chavarria
Oct 4, 2000·Physical Review Letters·J Qian
Oct 25, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·S KurienK R Sreenivasan
Oct 25, 2000·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·M OnoratoG Iuso
Apr 24, 2002·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·J Qian

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