Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Numerical Analysis of Cavitating Flow around Two-dimensional Wedge-shaped Submerged Bodies under the Wall Effect

벽면효과를 받는 2차원 쐐기형 몰수체의 공동 유동에 대한 수치해석

  • Kim, Ji-Hye (Chungnam National University, Department of Naval Architecture and Ocean Engineering) ;
  • Ahn, Byoung-Kwon (Chungnam National University, Department of Naval Architecture and Ocean Engineering)
  • 김지혜 (충남대학교 선박해양공학과) ;
  • 안병권 (충남대학교 선박해양공학과)
  • Received : 2017.03.08
  • Accepted : 2017.06.26
  • Published : 2017.08.20
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Abstract

In practice, cavitation phenomena occur in unbounded flows. However, the wall effect is unavoidable during experiments at a closed section such as a cavitation tunnel. Especially, supercavity generated behind a cavitator is relatively large and thick, so that geometric and dynamic characteristics of the cavity are affected by the tunnel wall. In order to apply experimental results into the unbounded flow field, physical correlations are necessary. In this paper, we proposed an image method based on a potential flow to simulate the wall effect. Considering two-dimensional wedge-shaped bodies, configurations and drag characteristics of the cavity were examined according to the distance ratio to the wall surface. The results were compared and verified with existing theoretical and experimental results.

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References

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