大尺度圆柱墩群周围的波流场的数值模拟

Interaction of Waves with Vertical Large-scale Cylinders in a Current

本文对波流共同作用下大尺度圆柱墩群周围的波流场进行了数值研究。利用波浪弥散关系的迭代计算求得波向与流向的夹角以及波浪的相对频率。流场通过求解浅水环流方程得到,波浪场通过求解含流的缓坡方程得到,通过二者的迭代计算得到大尺度圆柱墩群周围的波流场的耦合解。用有限元法建立了数值模型,并将本文的计算数据与试验数据以及其他学者计算数据进行了比较,结果较为合理。

The interaction of waves with vertical large-scale cylinders in a current is studied numerically in this paper. The wave relative frequency in the coordinate system moving with current and the angle between the direction of wave propagation and that of current are computed based on the wave dispersion relation. The current field is computed by solving the shallow water equation. The wave field is computed by solving the Mild Slope Equation that has taken the current's effect into account. The coupling result is obtained by iterative calculation of the above two fields. A numerical model is established using a Finite Element Method for simulating the interaction of waves with vertical large-scale cylinders in a current, and the numerical results are reasonable as compared with the experimental data and the result by some other researchers.