WATER ENTRY OF A WEDGE BASED ON SPH MODEL WITH AN IMPROVED BOUNDARY TREATMENT

查看全文 作　　者：GONG [1]Kai;LIU [1,2]Hua;WANG Ben-[1]long

机构地区：[1]Department of Engineering Mechanics, Shanghai Jiao Tong University, Shanghai 200240, China;[2]State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

出　　处：《Journal of Hydrodynamics》索引2009年第21卷第6期,共8页

基　　金：supported by the National Natural Science Foundation of China (Grant No.10802049);the Shanghai Leading Academic Discipline Project (Grant No.B206);the Research Found of State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University (Grant No.GKZD010806) 摘　　要：The hydrodynamic problem of a two-dimensional wedge entering water is studied based on Smoothed Particle Hydrodynamics (SPH) model. A non-reflection boundary treatment for SPH method is proposed to reduce the reflection of sound waves. The boundary pressure is obtained using an improved coupling boundary treatment approach, which is validated by comparing the simulation results with experimental and analytical results in literature. A series of cases with different initial entering velocities are simulated. The maximum force on the wedge and the corresponding time required to reach it for the different cases of initial entering velocities of the wedge are obained and fitted into formulas against the initial entering velocity of the wedge. The maximum drag coefficients of the wedge for the different cases with Froude number greater than 2 are all near the value of 0.91. 关键词：边界处理模型报业入水 Froude数楔子模拟速度粒子动力学

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WATER ENTRY OF A WEDGE BASED ON SPH MODEL WITH AN IMPROVED BOUNDARY TREATMENT

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引证文献(32)

耦合文献(51)

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