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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).

Information

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

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