Nonlinear development of the multiple Görtler modes in hypersonic boundary layer flows

Jie Ren, Song Fu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

The linear and nonlinear development of the Görtler vortices in hypersonic boundary layer flows with the consideration of multi-Görtler-modes are investigated using the normal mode analysis and the parabolized stability equations. The linear local analysis predicted the crossover of the multiple Görtler modes (between the trapped-layer mode and the primary wall-layer mode) when the Görtler number and Mach number are large enough, e.g. Ma≥4, G>2000. The Ma=4 case is verified with the linear marching analysis. Five particular regions can be distinguished depending on the behavior of the multi modes. The nonlinear analysis is performed for a Ma=6 case proposed by Li et al.1 The saturation of the disturbances is reached and the mushroom structures are generated. The multi-modecrossover is also observed with nonlinear effects.

Original languageEnglish
Title of host publication43rd Fluid Dynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624102141
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event43rd AIAA Fluid Dynamics Conference - San Diego, CA, United States
Duration: 24 Jun 201327 Jun 2013

Publication series

Name43rd Fluid Dynamics Conference

Conference

Conference43rd AIAA Fluid Dynamics Conference
Country/TerritoryUnited States
CitySan Diego, CA
Period24/06/1327/06/13

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