基于物理模型的海浪真实感模拟研究

Research on Realistic Simulation of Ocean Wave Based on Physical Model

为了提升航海模拟器视景系统的真实感,提出一种基于物理模型的流体粒子的旋涡限制力模型。采用基于位置的动力学框架构建流体粒子系统模型,通过涡度约束函数产生旋涡限制力,利用旋涡限制力实时更新流体粒子旋向加速度,进而更新流体粒子速度场。结果表明添加旋涡限制力的流体粒子模型可有效地模拟出复杂海面上海浪的翻卷与破碎,所求得速度场的粒子系统可一定程度上真实地模拟海浪表面,能有效地提高航海模拟器视景系统的真实感。

In order to improve the reality of the visual system of the maritime simulator,a physical model based vortex limiting force model of fluid particles is proposed.The basic idea is to use the Position Based Dynamic framework to build the fluid particle system model.The vorticity constraint function was used to generate the vorticity constraint force,and the vorticity constraint force was used to update the rotational acceleration of fluid particles in real time,and then update the velocity field of the fluid particle.The result shows that the fluid particle model with vortex limiting force can effectively simulate the wave overturning and breaking of complex sea surface,and the particle system of the velocity field can simulate the wave surface to a certain extent,which can effectively improve the reality of the visual system of the ship simulator.