摘要： 大面积水体仿真中的细节捕捉较为困难，且渲染效率容易受限。为此，提出一种基于图形处理单元(GPU)的水体表面动态多分辨率物理仿真模型。采用细节层次渐进网格划分方法对水体表面进行建模，利用统一计算构架和GPU技术加速纳维-斯托克斯方程的求解。实验结果表明，随着初始网格分辨率的提高，该模型的加速比逐渐加大，在分辨率达到1 024×1 024的情况下，能保证30帧左右的渲染 效率。

关键词: 网格, 流体仿真, 图形处理单元, 裂缝消除, Jacobi迭代

Abstract: Aiming at the difficulties of large water areas detailed simulation and the limitations of rendering efficiency, this paper presents a paralleled dynamic multi-resolution physical simulation model of water surface. In order to model water surface, it adopts a Level of Detail(LOD) progressive grid partition method which is relative to viewpoints, and utilizes Compute Unified Device Architecture(CUDA) and GPU technology to accelerate the solution of N-S equation. Experimental results show that the performance of the model can increase with the increases of the grid resolution, and reach more than 30 frame per second under the resolution of 1 024×1 024.

Key words: grid, fluid simulation, Graphic Processing Unit(GPU), crack elimination, Jacobi iteration

中图分类号: 

• N945.12