On the Turbulence Structure in a Supersonic Diffuser with Circular Cross-Section

Somnath Ghosh () and Rainer Friedrich ()
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Somnath Ghosh: Technische Universität München, Lehrstuhl für Aerodynamik
Rainer Friedrich: Technische Universität München, Lehrstuhl für Aerodynamik

A chapter in High Performance Computing in Science and Engineering, Garching/Munich 2009, 2010, pp 89-97 from Springer

Abstract: Abstract Effects of deceleration and mean compression on the turbulence structure of supersonic flow in a diffuser with an incoming supersonic fully-developed turbulent pipe flow are studied by means of DNS. Strong enhancement of the turbulence activity is observed when the flow undergoes deceleration. Turbulence production and pressure-strain terms in the Reynolds stress budgets are found to increase dramatically leading to increased Reynolds stresses. The central role of pressure-strain correlations in modifying the turbulence structure under these flow conditions is demonstrated.

Keywords: Mach Number; Reynolds Stress; Turbulence Structure; Reynolds Shear Stress; Adverse Pressure Gradient (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-13872-0_8

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DOI: 10.1007/978-3-642-13872-0_8

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