DEVELOPMENT OF MULTI-RESOLUTION SPH METHOD AND ITS VALIDATION

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  • SHIMAURA Gen
    東京都立大学 都市環境科学研究科都市基盤環境学域
  • SHINTANI Tetsuya
    東京都立大学 都市環境科学研究科都市基盤環境学域

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Other Title
  • 解像度可変型SPH法の開発と妥当性に関する研究

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<p> Multi-resolution technique has been implemented to the SPH method to reduce high computational costs in standard SPH with uniform particle size. The multi-resolution model splits a coarse particle into two fine particles in a high-resolution area and merges adjacent two fine particles into a coarse particle outside of the area. To check the validitity and efficiency of the present model, a dam-break and wave overtopping problems were analyzed. The model reproduced the measured location of dam-break tip with reasonable accuracy. The model also agreed well with the high-resolution uniform model both in the dam-break and overtopping problems, however, slightly increasing pressure oscillation. In terms of efficiency, the computational cost was reduced by 40% compared to the high-resolution uniform model with the present configuration.</p>

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