Turbulence in Compressible Mixing Layers

[+] Author and Article Information
Foluso Ladeinde, Wei Liu, Edward E. O’Brien

Department of Mechanical Engineering, SUNY at Stony Brook, Stony Brook, NY 11794-2300

J. Fluids Eng 120(1), 48-53 (Mar 01, 1998) (6 pages) doi:10.1115/1.2819659 History: Received November 21, 1996; Revised October 15, 1997; Online December 04, 2007


The direct numerical simulation (DNS) of two-dimensional compressible turbulent mixing layers is reported in this paper for convective Mach numbers Mc = 0.5, 0.8 and 1.0. All scales of flow are resolved with a 2562 grid, although results are also obtained for 642 , 962 and 1282 grids for the purpose of determining the effective accuracy and grid-independence of our calculations. The effect of Mach number is also reported for all the Reynolds stress tensor components and for the “shear” components of the anisotropy tensor, the dissipation tensor, pressure-strain, and the triple correlation tensor. The short-time behaviors of some of these quantities are similar to those reported by Sarkar (1995) for homogeneous shear flow, in spite of the differences in the problem type and initial and boundary conditions. The relative magnitudes and signs of the unclosed terms in the Reynolds stress equations provide information on those that have to be retained for turbulence modeling as well as the sense of their contribution.

Copyright © 1998 by The American Society of Mechanical Engineers
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