界面捕獲法を用いた孤立波の伝播に関する数値シミュレーション

抄録

The present study performed numerical simulations of a solitary wave propagation problem using a modified surface capturing method, and examined numerical accuracy for applications to free surface flow. The moving free surface was accurately tracked by the modified surface capturing method. Maximum run-up heights in the present study are in good agreement with the previous theoretical, numerical and experimental results. The phase shift qualitatively agrees with theoretical result, while there is a discrepancy between numerical and experimental ones. As compared with the previous method, the modified surface capturing method suppressed the numerical smearing of the free surface which is generated by the numerical diffusions. Furthermore, it was confirmed that the volume error is small and that the conservation property in the present study is greatly improved when the wave is propagating.