单桩柱和波浪双向流固耦合的数值模拟

Numerical simulation on bidirectional fluid-solid coupling between single pile and wave

以单桩基支撑结构为对象,建立模拟波浪和单桩柱结构的三维模型,采用k-ε湍流模型和VOF运动界面追踪方法,实现了桩柱和波浪之间的双向流固耦合模拟,得到了波面三维显示图、流固交界面压力分布图和桩柱结构的受力图。还对桩柱上的最大等效应力做了研究,其变化范围是15 704~16 320 Pa,根据Von Mises屈服准则可知,桩柱在这种波浪条件下是稳定的。

By taking the single pile foundation support structure as the object,a 3-D model for simulating both wave and single pile structure is established herein,and then the simulation on the bidirectional fluid-solid coupling between single pile and wave is realized with the k-ε turbulence model and VOF interface tracking method; from which the 3-D graphic display of wave,pressure distribution chart of fluid-solid interface and the force diagram of pile structure are obtained. Moreover,a study is also made on the maximum equivalent stress on the pile and it is found that its variation range is 15 704 ~ 16 320 Pa. It is known that the pile is surely stable under such condition of wave according to the von Mises yield stress criterion.