摘要
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。通过对不同波浪参数、结构物尺度、结构物与静水面的距离等情形的数值计算成果的比较分析 ,得到了波浪对结构物底面的冲击压力分布特征 ,讨论了结构物离开水面的距离S等参数对波浪冲击压力的影响 ,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。
The impact pressure on structures in the splash zone is investigated numerically based on the volume of fluid method(VOF) The govern equations are Reynolds time-averaged equations and two equations k-ε model Third order upwind difference scheme is applied to convection term to reduce the effect of numerical viscosity Parametric studies have been carried out for different wave parameter,structure geometry and the distance between the underside of structure and still water level 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
《山东建材学院学报》
2001年第2期142-145,共4页
Journal of Shandong Institute of Building Materials
