한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제32권1호
  • /
  • Pages.28-35
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  • 2018
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  • 1225-0767(pISSN)
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  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
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Analysis of Velocity Potential around Pulsating Bubble near Free or Rigid Surfaces Based on Image Method

  • 이상륜 (한국과학기술원 기계공학과) ;
  • 최걸기 (한국과학기술원 기계공학과) ;
  • 김종철 (국방과학연구소) ;
  • 유승화 (한국과학기술원 기계공학과)
  • 투고 : 2017.10.24
  • 심사 : 2017.12.15
  • 발행 : 2018.02.28
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초록

An analytical method for predicting the velocity potential around a pulsating bubble close to a free or rigid wall was established using an image method. Because the velocity potential should satisfy two boundary conditions at the bubble surface and rigid wall, we investigated the velocity in the normal direction at the two boundaries by adding the image bubbles. The potential was analyzed by decomposing the bubble motion as two independent motions, pulsation and translation, and we found that when the number of image bubbles was greater than ten, the two boundary conditions were satisfied for the translation term. By adding many image bubbles after the approximation of the pulsation term, we also confirmed that the boundary condition at the wall was satisfied.

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참고문헌

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