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On some kinematic versus dynamic properties of homogeneous turbulence

Published online by Cambridge University Press:  26 April 2006

L. Shtilman ,
M. Spector  and
A. Tsinober
L. Shtilman
Affiliation:
Department of Fluid Mechanics and Heat Transfer, Tel-Aviv University, Ramat Aviv, Tel-Aviv, 69978, Israel
M. Spector
Affiliation:
Department of Fluid Mechanics and Heat Transfer, Tel-Aviv University, Ramat Aviv, Tel-Aviv, 69978, Israel
A. Tsinober
Affiliation:
Department of Fluid Mechanics and Heat Transfer, Tel-Aviv University, Ramat Aviv, Tel-Aviv, 69978, Israel
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Abstract

A comparison is made between a number of properties of a quasi-homogeneous isotropic turbulent field obtained from a direct numerical simulation of the Navier–Stokes equation and its random counterpart with the same energy spectrum. It is demonstrated that some effects in a real flow have a considerable contribution of a kinematic nature (e.g. reduction of nonlinearity), while others are mostly dynamical (e.g. alignment between vorticity and eigenvectors of the rate of strain).

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 247 , February 1993 , pp. 65 - 77
Copyright
© 1993 Cambridge University Press

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