基于改进 Gerstner 波的岛礁近岸波浪实时仿真?

为了实现岛礁附近波浪实时仿真，结合 Gerstner 波和水波动力学知识，提出了一种能够模拟波浪卷曲和折射绕射现象的波浪建模与绘制方法。首先，建立 Gerstner 波参数随水深变化关系，构建模拟波浪卷曲过程的几何模型；然后，定义岛礁地形对波浪传播的阻障和遮挡系数，并据此修正波浪传播的波向和波高，实现折射和绕射现象的仿真；最后，应用着色器缓存技术完成计算的硬件加速，并构建了基于视点的波浪传播多分辨率绘制策略。实验结果表明，该方法对波浪的卷曲和折射绕射现象取得了较好的仿真效果，绘制效率能够满足实时性要求。

Real-time Simulation of Wave Around Islands Based on Improved Gerstner Wave

In order to simulate the wave around island in real-time, with reference to the Gerstner Wave and the water wave dynamics, a method which can simulate comber, wave refraction and diffraction is presented. First, the relationship between Gerstner Wave's and water depth, and the geometric model of wave propagation are developed. Then, the island's block and obstacle coefficient of wave propagation are defined. And the wave direction and height are adjusted by these coefficients to a-chieve the wave refraction and diffraction effect. Finally, shader caching technology is used to increase calculation speed, al-so a strategy of multi-resolution rendering is built based on viewpoint. The experimental results show that the method has ob-tained good result in simulating comber and wave refraction and diffraction. And drawing efficiency can satisfy the real-time requirements.