Physics – Fluid Dynamics
Scientific paper
2009-12-09
Theoretical and Computational Fluid Dynamics, 2010
Physics
Fluid Dynamics
12 pages, 11 figures
Scientific paper
10.1007/s00162-010-0213-7
In this work, we calculate the self-similar longitudinal velocity correlation function and the statistical properties of velocity difference using the results of the Lyapunov analysis of the fully developed isotropic homogeneous turbulence just presented by the author in a previous work (arXiv:0911.1463). There, a closure of the von Karman-Howarth equation is proposed and the statistics of velocity difference is determined through a specific analysis of the Fourier-transformed Navier-Stokes equations. The correlation functions correspond to steady-state solutions of the von Karman-Howarth equation under the self-similarity hypothesis introduced by von Karman. These solutions are numerically determined with the statistics of velocity difference. The obtained results adequately describe the several properties of the fully developed isotropic turbulence.
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