運動量移流型単相LESモデルによる気泡領域を含む砕波計算 Modeling wave breaking including bubbly flow with momentum advection unified-phase LES model
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To calculate wave breaking, a numerical simulation method for fluid composed of air, water and intermediate bubbly flow is presented. Bubbly flow is assumed as a fluid with density continuously varying between air and water and calculated as an incompressible uni-phase flow. To satisfy momentum conservation over the computational domain with large density variation, Navier-Stokes equation described in terms of momentum advection is employed as the governing equation. The advection terms of the momentum equation and advection equation for Density Value Method are solved by R-CIP method to avoid numerical diffusion. The results are compared with experimental results for a dam-break, bore and wave breaking on a slope. It is found that the model can reproduce bubbly areas due to wave breaking fairy well.
- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 66(1), 31-35, 2010
Japan Society of Civil Engineers