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Direct numerical simulation of turbulent mixing in shear flows

Published online by Cambridge University Press:  09 March 2009

A.L. Stadnik ,
V.P. Statsenko ,
Yu.V. Yanilkin  and
V.A. Zhmailo
A.L. Stadnik
Affiliation:
Russian Federal Nuclear Center, Institute of Experimental Physics, Sarov (Arzamas-16), Russia, 607200
V.P. Statsenko
Affiliation:
Russian Federal Nuclear Center, Institute of Experimental Physics, Sarov (Arzamas-16), Russia, 607200
Yu.V. Yanilkin
Affiliation:
Russian Federal Nuclear Center, Institute of Experimental Physics, Sarov (Arzamas-16), Russia, 607200
V.A. Zhmailo
Affiliation:
Russian Federal Nuclear Center, Institute of Experimental Physics, Sarov (Arzamas-16), Russia, 607200
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Abstract

This article considers one of the simplest shear flows–ID time-dependent plane mixing layer. Under certain conditions, many more complicated flows are similar to it: timeindependent plane mixing layer, initial portion of plane and round jets, initial mixing phase in cylindrical vortex, etc. This application was previously studied in a 2D approximation. In this computation the turbulence was treated as the result of random perturbations initially applied to the interface of two flows. Numerical simulation used a 2D EGAK code. The computational results were interpreted using the version of semi-empirical turbulent theory with isotropic Reynolds tensor (model 1). This article continues the studies by Bakhrakh; in addition, a similar approach is implemented based on 3D simulation with the TREK method. The data interpretation uses the version of semi-empirical theory with and without Reynolds tensor anisotropy (models 1 and 2, respectively).

Type
Research Article
Information
Laser and Particle Beams , Volume 15 , Issue 1 , March 1997 , pp. 115 - 125
Copyright
Copyright © Cambridge University Press 1997

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References

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