Results of a numerical study are presented for hypersonic low-density flow about a 70-deg blunt cone using direct simulation Monte Carlo (DSMC) and Navier-Stokes calculations. Particular emphasis is given to the effects of chemistry on the near-wake structure and on the surface quantities and the comparison of the DSMC results with the Navier-Stokes calculations. The flow conditions simulated are those experienced by a space vehicle at an altitude of 85 km and a velocity of 7 km/s during Earth entry. A steady vortex forms in the near wake for these freestream conditions for both chemically reactive and nonreactive air gas models. The size (axial length) of the vortex for the reactive air calculations is 25 % larger than that of the nonreactive air calculations. The forebody surface quantities are less sensitve to the chemistry than the base surface quantities. The presence of the afterbody has no effect on the forebody flow structure or the surface quantities. The comparisons of DSMC and Navier-Stokes calculations show good agreement for the wake structure and the forebody surface quantities.


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    Titel :

    Effects of chemistry on blunt-body wake structure


    Weitere Titelangaben:

    Einfluß des Chemismus auf die Wirbelstrasse hinter einem stumpfen Körper


    Beteiligte:
    Dogra, V.K. (Autor:in) / Moss, J.N. (Autor:in) / Wilmoth, R.G. (Autor:in) / Taylor, J.C. (Autor:in) / Hassan, H.A. (Autor:in)

    Erschienen in:

    AIAA Journal ; 33 , 3 ; 463-469


    Erscheinungsdatum :

    1995


    Format / Umfang :

    7 Seiten, 10 Bilder, 2 Tabellen, 21 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Effects of chemistry on blunt-body wake structure

    Dogra, Virendra K. / Moss, James N. / Wilmoth, Richard G. et al. | AIAA | 1995


    Effects Of Chemistry On Blunt Body Wake Structure

    Dogra, V. K. / Moss, J. N. / Wilmoth, R. G. et al. | British Library Conference Proceedings | 1994


    Effects of Chemistry on Blunt-Body Wake Structure

    Dogra, V.K. | Online Contents | 1995