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The compressible mixing layerThe capability of turbulence modeling correctly to handle natural unsteadiness appearing in compressible turbulent flows is investigated. Physical aspects linked to the unsteadiness problem and the role of various flow parameters are analyzed. It is found that unsteady turbulent flows can be simulated by dividing these motions into an 'organized' part for which equations of motion are solved and a remaining 'incoherent' part represented by a turbulence model. Two-equation turbulence models and second-order turbulence models can yield reasonable results. For specific compressible unsteady turbulent flow, graphic presentations of different quantities may reveal complementary physical features. Strong compression zones are observed in rapid flow parts but shocklets do not yet occur.
Document ID
19910070966
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Vandromme, Dany
(Rouen, Institut National des Sciences Appliquees, Mont-St.-Aignan; Centre Europeen de Recherche et de Formation Avancee en Calcul Scientifique Toulouse, France)
Haminh, Hieu
(Toulouse, Ecole Nationale Superieure d'Electrochemie, d'Electronique, d'Informatique et d'Hydraulique; Centre Europeen de Recherche et de Formation Avancee en Calcul Scientifique, France)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
91A55589
Funding Number(s)
CONTRACT_GRANT: NCC2-186
Distribution Limits
Public
Copyright
Other

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