Length Scales of Acceleration for Locally Isotropic Turbulence

Details Length Scales of Acceleration for Locally Isotropic Turbulence Length Scales of Acceleration for Locally Isotropic Turbulence

2002-09-06

arxiv.org/abs/physics/0209029v1

Physics

Fluid Dynamics

2 figures, 4 pages. Physical Review Letters, accepted August 2002

Scientific paper

10.1103/PhysRevLett.89.174501

Length scales are determined that govern the behavior at small separations of the correlations of fluid-particle acceleration, viscous force, and pressure gradient. The length scales and an associated universal constant are quantified on the basis of published data. The length scale governing pressure spectra at high wave numbers is discussed. Fluid-particle acceleration correlation is governed by two length scales; one arises from the pressure gradient, the other from the viscous force.

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