NUMERICAL SIMULATION OF TURBULENT SHOCK-INDUCED SEPARATED FLOWS: APPLICATION TO THE SUPERSONIC OVER-EXPANDED NOZZLE FLOW - Couverture souple

Shams, Afaque

 
9783844318562: NUMERICAL SIMULATION OF TURBULENT SHOCK-INDUCED SEPARATED FLOWS: APPLICATION TO THE SUPERSONIC OVER-EXPANDED NOZZLE FLOW
Couverture souple
ISBN 10 : 3844318569 ISBN 13 : 9783844318562
Editeur : LAP LAMBERT Academic Publishing, 2011

Synopsis

Shock-induced flow separation and its subsequent reattachment are encountered in many configurations, such as supersonic inlets or rocket nozzles. These phenomena involve complex interactions of boundary layers with compression or expansion waves and exhibit a low-frequency unsteady behaviour which still requires a clear explanation. This study aims at better identifying the physical mechanisms which drive the global structure of these flows and suggesting improved numerical tools in order to predict these more accurately. The appearance of free and restricted separations in supersonic separated jets is more particularly investigated. Various hypotheses are tested to explain the evolution of the associated unsteady asymmetric wall pressure field in function of the nozzle pressure ratio. New numerical strategies are proposed and lead to identify more accurately the appearance of free and restricted separations and the time-varying morphology of the flow during the transition process. Possible origins of side-load activities are extensively investigated by performing the azimuthal expansion of wall pressure field.

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Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2011
Langue
anglais
ISBN 10 
3844318569
ISBN 13 
9783844318562
Reliure
Broché
Nombre de pages
248
Coordonnées du fabricant
non disponible
Personne responsable
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