Journal of Ship and Ocean Technology

The Society of Naval Architects of Korea (대한조선학회)
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Sensitivity Study of Smoothed Particle Hydrodynamics

  • Kim, Yoo-Il (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Nam, Bo-Woo (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Kim, Yong-Hwan (Department of Naval Architecture and Ocean Engineering, Seoul National University)
  • Published : 2007.12.31
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Abstract

Systematic sensitivity analysis of smoothed particle hydrodynamics method (SPH), a gridless Lagrangian particle method, was carried out in this study. Unlike traditional grid-based numerical schemes, systematic sensitivity study for computational parameters is very limited for SPH. 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 type of kernel function, the frequency of density re-initialization, particle number, smoothing length and pressure extraction method. Through a series of numerical test, detailed information was obtained about how SPH solution can be more stabilized and improved by adjusting computational parameters.

Keywords

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