The transition from laminar to turbulent flow significantly affects the surface heating as well as the aerodynamic performance of a hypersonic vehicle. Thus, an accurate prediction of boundary-layer transition is necessary for an optimum design of the vehicle and its thermal protection system. For flight at high Mach numbers, thermal and chemical nonequilibrium may exist in the mean flow and thus affect the stability of the flow. A computational tool was developed to analyze a hypersonic mean flow and its stability including thermochemical nonequilibrium. The mean flow analysis employs the Navier-Stokes equations with a translational/vibrational temperature model for thermal nonequilibrium and a five-species reacting air model for chemical nonequlilibrium. The stability analysis employs linear stability theory to describe the spatial amplification of two- and three-dimensional disturbances. The computational tool is used to determine the frequency and spatial amplification of disturbances that may lead to boundary layer transition on cold wall and adiabatic flat plates. The effect of thermal and chemical nonequilibrium on stability is shown to depend on the disturbance mode.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Linear stability of hypersonic flow in thermochemical nonequilibrium


    Additional title:

    Lineare Stabilität einer Hyperschallströmung im thermochemischen Ungleichgewicht


    Contributors:
    Hudson, M.L. (author) / Chokani, N. (author) / Candler, G.V. (author)

    Published in:

    AIAA Journal ; 35 , 6 ; 958-964


    Publication date :

    1997


    Size :

    7 Seiten, 13 Bilder, 1 Tabelle, 17 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Linear stability of hypersonic flow in thermochemical nonequilibrium

    Hudson, Mary / Chokani, Ndaona / Candler, Graham | AIAA | 1996


    Linear Stability of Hypersonic Flow in Thermochemical Nonequilibrium

    Mary L. Hudson / Ndaona Chokani / Graham V. Candler | AIAA | 1997



    Numerical Analysis of Thermochemical Nonequilibrium Hypersonic Flow araund Blunt Body

    Kurotaki, T. | British Library Conference Proceedings | 1996