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

The Society of Naval Architects of Korea (대한조선학회)
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Study on the Effects of Computational Parameters in SPH Method

SPH 기법의 계산인자 민감도에 대한 연구

  • Kim, Yoo-Il (Dept. of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Nam, Bo-Woo (Maritime and Ocean Engineering Research Institute) ;
  • Kim, Yong-Hwan (Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
  • 김유일 (서울대학교 공과대학 조선해양공학과) ;
  • 남보우 (한국해양연구원 해양시스템안전연구소) ;
  • 김용환 (서울대학교 공과대학 조선해양공학과)
  • Published : 2007.08.20
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Abstract

A smoothed particle hydrodynamics (SPH) method is applied for simulating two-dimensional free-surface problems. The SPH method based on the Lagrangian formulation provides realistic flow motions with violent surface deformation, fragmentation and reunification. In this study, the effect of computational parameters in SPH simulation is explored through two-dimensional dam-breaking and sloshing problem. The parameters to be considered are the speed of sound, the frequency of density re-initialization, the number of particle and smoothing length. Through a series of numerical test. detailed information was obtained about how SPH solution can be more stabilized and improved by adjusting computational parameters. Finally, some numerical simulations for various fluid flow problem were carried out based on the parameters chosen through the sensitivity study.

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References

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