威海船厂港域波高数值计算*

应用能量平衡方程研究近岸随机波的传播变形是一种简单而实用的方法,其在海洋学以及海岸动力学中得到了广泛的应用。采用考虑绕射作用的能量平衡方程作为计算随机波浪传播变形的控制方程,以此建立的数学模型考虑了波浪的浅化、折射、绕射、反射和破碎。利用该模型对威海船厂港内随机波传播变形进行数值模拟,通过数值计算值与试验值的比较,发现在相同的考虑因素下两者是相当吻合的,说明模型在计算近岸随机波的传播变形时是实用而可靠的。

Numerical calculation of wave height in harbor basin of Weihai dockyard

It is a simple and practical method to research nearshore random waves propagation and transformation by the application of the energy balance equation. This method has been used in oceanography andcoastal dynamics widely. In this paper, the energy balance equation considering the diffraction effect is used as the control equation to calculate the random wave propagation and transformation. Based on the control equation, a numerical model is established considering comprehensive effects of wave shoaling, refraction, diffraction, reflection and breaking. The random wave propagation and transformation in the harbor basin of Weihai dockyard is simulated using this model. Example results show that the calculated values are in good agreement with the experimental values under the same considered cases. It indicates that the model is practical and reliable to stimulate the nearshore random wave propagation and transformation.