A turbulence model for the pressure–strain correlation term accounting for compressibility effects

✍ Scribed by Hitoshi Fujiwara; Yuichi Matsuo; Chuichi Arakawa

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 126 KB
• Volume: 21
• Category: Article
• ISSN: 0142-727X
• DOI: 10.1016/s0142-727x(00)00020-5

✦ Synopsis

Compressibility eects on turbulence are examined with special focus on the intercomponent energy transfer via the pressure± strain term in compressible turbulence. Experimental studies often show that the growth rate of compressible mixing layers is reduced with increasing Mach number. The recent analysis of the direct numerical simulation data bases for compressible turbulence shows that this reduction is due to the suppression of the pressure±strain correlation in the compressible mixing layer. In this paper, the order of magnitude analysis in compressible turbulence is performed to derive a turbulence model for the pressure±strain term in which this compressibility eect is included. The derived model is used to simulate compressible mixing layers, showing that the model predicts the reduced growth rate observed in experimental studies.