The concept of the generalized hypersonic equivalence principle for viscous flows is proposed in this paper. The traditional hypersonic equivalence principle applies only to the inviscid flows and pressure prediction. The present generalized principle indicates that the skin friction and the heat flux resulting from a steady viscous flow over a slender body could also be approximately analogous to the counterparts in an equivalent unsteady flow in one less space dimension. The key point is that the hypersonic velocity component perpendicular to the reduced unsteady flow plane should be retained and its evolution with time be properly treated to produce strong shear and dissipation effects. The generalized principle is specifically implemented by using the direct simulation Monte Carlo method to study the fundamental boundary-layer flow models and a practical complex viscous-interaction flow over a typical vehicle model. The results of the pressure, skin friction, and heat flux from the steady flows and the corresponding reduced unsteady flows are compared and analyzed. This study points out an inherent similarity between the hypersonic steady flow and the dimension-reduced unsteady flow, and also shows a potential application value in the engineering practice.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Generalized Hypersonic Equivalence Principle


    Beteiligte:
    Wang, Zhi-Hui (Autor:in)

    Erschienen in:

    AIAA Journal ; 58 , 1 ; 255-264


    Erscheinungsdatum :

    2019-09-25


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Equivalence Principle Experiments in Space

    Blaser, J.-P. | British Library Online Contents | 1997


    The European Equivalence Principle experiment

    Touboul, P. / Sandford, M. C. W. / Carelli, P. et al. | British Library Conference Proceedings | 1996


    The Equivalence Principle experiment at CERN

    Carusotto, S. / Cavasinni, V. / Mordacci, A. et al. | British Library Conference Proceedings | 1996



    Galileo and the Principle of Equivalence

    Fuligni, F. / Iafolla, V. / European Space Agency | British Library Conference Proceedings | 1996