摘要
自然气象场景的模拟与大气流体运动模拟密切相关。三维的离散格子气模型需要采用复杂的FCHC网格方能满足流体运动模拟的对称性要求。本文提出了一种基于翻转概率的离散格子气模型,在正交三维网格上实现了流体运动的模拟,在满足对称性要求的前提下,实现了离散格子气模型的快速模拟。本文利用该模型实现了云景仿真的模拟。实验证明,这种模型对于流体模拟是有效的。
The simulation of natural scenery is a challenging and important field of computer graphics, and it is relative with the simulation of fluid motion. The 3-D discrete Boltzmann gas lattice method has been used in fluid simulation, but the FCHC grids lead to complex and difficult realization. This paper proposes a new Boltzrnarm model, which is the lattice gas model based on turn probability （LGT）. The model is defined on the regular equidistant grid and is efficient and easy for the application in natural scenery simulation. Additionally, LGT has been used to simulate the dynamic cloud scene, and the results of experiment demonstrate that LGT is a good choice for fluid simulation and virtual natural scenery.
出处
《计算机工程与科学》
CSCD
2006年第10期57-60,共4页
Computer Engineering & Science
基金
国家973计划资助项目(2002CB31205)
关键词
格子气模型
自然场景模拟
流体模拟
lattice gas model
simulation of natural scenery
fluid simulation
