摘要
本文通过无反射数值波浪水槽研究了周期波浪对浪溅区结构物的冲击作用,控制方程为雷诺时均方程,采用k-ε紊流模型及在近壁区应用壁函数。建立了适合VOF方法的水体与结构物接触与分离的数值边界条件及动量方程的对流项采用了三阶迎风差分格式以消除数值粘性的影响。通过数模得到了波浪对位于浪溅区结构物底面的波浪冲击压力幅值及沿底面分布的定量结果。讨论了不同结构物尺度及距静水面高度对冲击压力沿建筑物底面分布的影响。
The present study is to investigate numerically the wave slamming by absorbed numerical wave tank. The governing equations are Reynolds time averaged equations and two equation k ε model. Third order. upwind difference scheme is applied to convection term of momentum equation in order to reduce the effect of numerical viscosity. Appropriate moving contact line boundary conditions are introduced to model wave in contact with and separation from the underside of structure. Parametric studies have been carried out for different structure geometry and the distance between underside of structure and still water level by present numerical model. The peak value of impact pressure and pressure distribution along the underside of structure are obtained and discussed. The statistical properties of peak pressure at initial contact and the negative pressures at the later stage are predicted.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
1999年第4期409-417,共9页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金!资助项目 (编号 5 9379387)
关键词
波浪冲击
湍流
数值模拟
wave slamming, turbulence, numerical simulation.
