SOLID-LIQUID TWO PHASE FLOW MODEL BASED ON LAGLANGIAN PARTICLE METHOD FOR THE SIMULATION OF WATER WAVE GENERATION DUE TO LANDSLIDES

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  • 固液二相流型粒子法による大規模土砂崩壊に伴う水面波の発生過程の数値解析
  • コエキ 2ソウリュウガタ リュウシホウ ニ ヨル ダイキボ ドシャ ホウカイ ニ トモナウ スイメンハ ノ ハッセイ カテイ ノ スウチ カイセキ

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Abstract

The inflow-sediment-induced water-wave generation is investigated by the solid-liquid two-phase flow model which is discretized by the Lagrangian particle method. The physical process of the wave generation can be clarified in detail by tracking the sediment-water-mixing process and the resultant momentum transfer from sediment to water. The MPS method, which is free from a numerical diffusion, is applied to track the water-sediment interface and the water surface wave with high resolution. The time series of the water-surface elevation are compared with some alternative wave-generating methods, to estimate the wave-making efficiency of inflow sediment.

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