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International Journal for Multiscale Computational Engineering

ISSN for PRINT: 1543-1649

Institutional price:	$747.00
Issues per year:	6

Best Paper Award Selection - Editorial Board Site

2005, Volume3

141 pages

Issue price - $178.00

Turbulent Structures in a Slightly Compressible Mixing Layer

M. Si-Ameur
Mechanical Engineering Institute, University of Batna, Rue Chahid Boukhlouf, 05000, Algeria

ABSTRACT

The configuration of a compressible mixing layer confined between rigid walls at high Reynolds number is studied at convective Mach number M_c=0.64, using the monotonically integrated large eddy simulation approach. The purpose is to analyze the flow configuration with attention to the turbulent mixing linked to large scales in the transition and turbulent zones. The full Navier-Stokes equations are solved with a high-order Godunov's scheme piecewise parabolic method with the approximate Riemann solver of Roe. On the basis of flow visualization, highly three-dimensional vortex lattices undergoing helical pairing of oblique structures are observed in the transition zone. A particular structure of mixing in sublayers is detected qualitatively and through probability density function analysis. Computed statistics are in good agreement with experimental measurements.