Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Numerical Modeling of the Mathematical Model of Single Spherical Bubble

단일 구형 기포의 수학적 모델에 대한 수치적 해석 모델

  • 강동근 (한양대학교 기계설계.메카트로닉스공학과) ;
  • 양현익 (한양대학교 기계공학과)
  • Received : 2010.08.06
  • Accepted : 2010.10.26
  • Published : 2010.12.15
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Abstract

Cavitation is described by formation and collapse of the bubbles in a liquid when the ambient pressure decreases. Formed bubbles grow and collapse by change of pressure, and when they collapse, shockwave by high pressure is generated. In general, bubble behavior can be described by Rayleigh-Plesset equation under adiabatic or isothermal condition and hence, phase shift by the pressure change in a bubble cannot be considered in the equation. In our study, a numerical model is developed from the mathematical model considering the phase shift from the previous study. In the developed numerical model, size of single spherical bubble is calculated by the change of mass calculated from the change of the ambient pressure in a liquid. The developed numerical model is verified by a case of liquid flow in a narrow channel.

Keywords

References

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