Hypersonic transition investigations in a flat-plate boundary-layer flow at M=20

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Abstract

Direct numerical simulations of the complete, three-dimensional unsteady Navier-Stokes equations of hypersonic flows are conducted for ideal-gas conditions as well as chemical and thermal non-equilibrium conditions. First, comparison for the ideal gas results with Linear Stability Theory are presented to validate the proposed method. The high-speed boundary-layer flow is perturbed at the wall to introduce disturbances of two-dimensional and three-dimensional nature. The spatial evolution of these instabilities is investigated for isothermal wall conditions. Comparison with chemical and thermal non-equilibrium results for the disturbance development is presented. A five species, two-temperature model is employed to model the non-equilibrium conditions.

Original languageEnglish
Title of host publication35th AIAA Fluid Dynamics Conference and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624100598
DOIs
StatePublished - 2005
Externally publishedYes
Event35th AIAA Fluid Dynamics Conference and Exhibit - Toronto, ON, Canada
Duration: 6 Jun 20059 Jun 2005

Publication series

Name35th AIAA Fluid Dynamics Conference and Exhibit

Conference

Conference35th AIAA Fluid Dynamics Conference and Exhibit
Country/TerritoryCanada
CityToronto, ON
Period6/06/059/06/05

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