Numerical and Experimental Investigations on Mach 2 and 4 Pseudo-Shock Waves in a Square Duct

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Abstract

The structures and characteristics of λ-shaped and X-shaped pseudo-shocks in a square duct are investigated through numerical simulations and experiments at Mach 2 and Mach 4, respectively. The experiments were carried out in a pressure-vacuum supersonic wind tunnel with a test cross section of 80×80 mm<SUP>2</SUP>. Numerical simulations were carried out using the Harten-Yee second-order TVD scheme and the Baldwin-Lomax turbulence model. The Reynolds numbers for the Mach 2 and 4 cases were <I>Re</I><SUB>∞</SUB>=2.53×10<SUP>7</SUP> and <I>Re</I><SUB>∞</SUB>=2.36×10<SUP>7</SUP>, respectively, and the flow confinement was δ<SUB>∞</SUB>⁄<I>h</I>=0.35 for both cases. The computational results for the Mach 2 pseudo-shock wave are in good agreement with the experimental results. Based on this agreement, the flow quantities, which are very difficult to obtain experimentally, were analyzed by numerical simulation. Although several differences were found between the computational results and experiments in the case of Mach 4 due to asymmetric characteristics in experiment which could not be reproduced in numerical simulation, the computational results are valuable for understanding this complex asymmetric phenomenon.

Journal

  • TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 47(156), 124-130, 2004-08-04

    JAPAN SOC AERONAUT SPACE SCI

References:  18

Cited by:  1

Codes

  • NII Article ID (NAID)
    10013467463
  • NII NACSIS-CAT ID (NCID)
    AA0086707X
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    05493811
  • NDL Article ID
    7044473
  • NDL Source Classification
    ZN25(科学技術--運輸工学--航空機・ロケット)
  • NDL Call No.
    Z53-M236
  • Data Source
    CJP  CJPref  NDL  IR  J-STAGE 
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