The paper presents a computational and an experimental investigation of base flow of a circular cylinder at hypersonic speeds. Effects of chemistry and wall temperature on the flow in the base region, at low to high enthalpies, are discussed. The experiments were conducted in a shock tunnel at a nominal Mach number of 10. Freestream Reynolds numbers based on cylinder diameter were 0.97 × 10 4 and 3.74 × 10 4 , respectively, and the total specific enthalpies were 13.35 and 3.94    MJ / kg , respectively. The test gas was air. The surface pressure and heat flux were measured using a cold wall model. Equilibrium and thermal as well as chemical nonequilibrium numerical simulations were performed using a Navier–Stokes equations-based computational fluid dynamics code. Both a cold wall and adiabatic wall were considered. Particular emphasis was placed on the wake structure, vorticity distribution, wake centerline aerothermodynamic properties, and surface data. The existing low-enthalpy cold hypersonic wind-tunnel experimental data are included for comparison. The simulations predicted the effect of chemistry on the near wake to be negligible for the low-enthalpy, high Reynolds number flow but more significant for the high-enthalpy, low Reynolds number flow.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Base Flow of Circular Cylinder at Hypersonic Speeds


    Contributors:

    Published in:

    AIAA Journal ; 54 , 2 ; 458-468


    Publication date :

    2016-01-04


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Base Flow of Circular Cylinder at Hypersonic Speeds

    Park, Gisu | Online Contents | 2016



    Laminar Near Wake of a Circular Cylinder at Hypersonic Speeds

    Park, Gisu / Gai, Sudhir L. / Neely, Andrew J. | AIAA | 2010



    Corner flow at hypersonic speeds

    Stainback, P. C. / Weinstein, L. M. | NTRS | 1967