Turbulent Supersonic Channel Flow: Direct Numerical Simulation and Modeling | Zendy

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Turbulent Supersonic Channel Flow: Direct Numerical Simulation and Modeling

Author(s) -

Stefan Heinz

Publication year - 2006

Publication title -

aiaa journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.828

H-Index - 158

eISSN - 1081-0102

pISSN - 0001-1452

DOI - 10.2514/1.22259

Subject(s) - turbulence , mechanics , direct numerical simulation , k epsilon turbulence model , supersonic speed , physics , turbulence kinetic energy , k omega turbulence model , compressibility , flow (mathematics) , open channel flow , turbulence modeling , computer simulation , statistical physics , classical mechanics , reynolds number

In this paper, direct numerical simulation results of turbulent supersonic channel flow are analyzed to address several questions that are relevant to turbulence modeling: the turbulence frequency production mechanism, wall damping effects on turbulence model parameters, and the relevance of compressibility effects. Limited support is found for usually applied models for the turbulence frequency production and wall damping effects. In contrast to that it is shown that turbulence frequency production mechanisms and wall damping effects may be explained very well on the basis of a frequency scaling that characterizes mean flow changes. The influence of compressibility is found to be relevant.

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