Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Successive Interactions of a Shock Wave with Serially Arranged Vortices

  • Chang, Se-Myong (School of Mechanical Engineering, College of Engineering, Kunsan National University) ;
  • Chang, Keun-Shik (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
  • Published : 2004.04.01
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Abstract

Navier-Stokes computation based on a new simplified model is proposed to investigate the interactions of a moving shock wave with multiple vortices arranged in the serial manner. This model problem simulates shock-vortexlet interactions at the shear layer of a compressible vortex often observed in the experiment. Applying the Foppl's idea, we extended the Rankin's model generally used for the description of a single vortex to the multi-vortex version. The acoustic pulses accelerated and decelerated are successively generated and propagated from each shock-vortex interaction, which simply explains the genesis of eccentrically diverging acoustic waves appearing in the experimental photograph.

Keywords

References

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