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LEI Juan-mian, ZHENG Zhi-wei, ZHOU Qi. Numerical investigation of cavity flow at subsonic and transonic speeds[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2014, 23(1): 16-23.
Citation: LEI Juan-mian, ZHENG Zhi-wei, ZHOU Qi. Numerical investigation of cavity flow at subsonic and transonic speeds[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2014, 23(1): 16-23.
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Numerical investigation of cavity flow at subsonic and transonic speeds

  • School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

  • Received Date:2013-01-10
    Abstract
  • Based on finite volume method, subsonic and transonic flow in 3-D cavity of different length-to-depth ratios are numerically investigated by using Navier-Stokes equations with k-ωSST two-equation turbulence model and coupled implicit algorithm. The cavity streamline patterns and the static pressure coefficient distributions on the cavity floor are shown, and the flow characteristics of the cavity and the floor pressure coefficient distributions are analyzed. Numerical results demonstrate that the flow characteristics of the cavity at subsonic and transonic speeds are different from that of supersonic ones; length-to-depth ratio is the main factor that affects the flow characteristics of the cavity at subsonic and transonic speeds and causes changes of the cavity flow type; Mach number has a neglectable effect on the cavity flow fields at subsonic and transonic speeds and the cavity floor pressure distributions.
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