A parametric computational study of energy deposition upstream of generic two-dimensional and axisymmetric blunt bodies at Mach numbers of 6.5 and 10 is performed utilizing a full Navier-Stokes computational fluid dynamics code. The energy deposition modifies the upstream shock structure and results in large wave drag reduction and very high power effectiveness. Specifically, drag is reduced to values as low as 30 % of baseline drag (no energy deposited into flow) and power effectiveness ratios (ratio of thrust power saved to power deposited into the low) of up to 33 are obtained. The fluid dynamic and thermodynamic bases of the observed drag reduction are examined.


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    Title :

    Blunt-body wave drag reduction using focused energy deposition


    Additional title:

    Reduzierung des Wellenwiderstandes stumpfer Strömungskörper durch stromaufwärts befindliche Wärmequellen


    Contributors:
    Riggins, D. (author) / Nelson, H.F. (author) / Johnson, E. (author)

    Published in:

    AIAA Journal ; 37 , 4 ; 460-467


    Publication date :

    1999


    Size :

    8 Seiten, 19 Bilder, 1 Tabelle, 11 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Blunt-Body Wave Drag Reduction Using Focused Energy Deposition

    David Riggins / H. F. Nelson / Eric Johnson | AIAA | 1999


    Blunt body wave drag reduction using focused energy deposition

    Riggins, David / Nelson, H. / Johnson, Eric | AIAA | 1998


    Blunt Body Wave Drag Reduction Using Focused Energy Deposition

    Riggins, D. W. / Nelson, H. F. / Johnson, E. et al. | British Library Conference Proceedings | 1998



    Numerical Analysis of Drag Reduction for Supersonic Blunt Body by Pulse Energy Deposition

    Shinichi, Taguchi / Naofumi, Ohnishi / Furudate, Michiko et al. | AIAA | 2007