Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
권호 표지

NUMERICAL SIMULATION OF SHOCK FOCUSING PHENOMENON BY CARTESIAN EMBEDDED BOUNDARY METHOD AND WAVE PROPAGATION ALGORITHM

내장 카티지안 경계법과 파동전파 알고리즘을 사용한 충격파 집속 현상의 수치적 시뮬레이션

  • 정연규 (한국과학기술원 항공우주학과) ;
  • 장근식 (한국과학기술원 항공우주학과)
  • Received : 2010.02.10
  • Accepted : 2010.04.09
  • Published : 2010.06.30
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Abstract

Shock-focusing concave reflectors can have parabolic, circular or elliptic cross-sections. They produce effectively a very high pressure at the focusing point. In the past, many optical images have been obtained on shock focusing via experiments. Measurement of field variables is, however, difficult in the experiment. Using the wave propagation algorithm and the Cartesian embedded boundary method, we have successfully obtained numerical Schlieren images that appear very much like the experimental results. In addition, we obtained the detailed field variables such as pressure, velocity, density and vorticity in the unsteady domain. The present numerical results have made it possible to understand the shock focusing phenomenon in more detail than before.

Keywords

References

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