一种火焰模拟的新方法

详细介绍了Lattice-Boltzmann方法的物理和数学理论基础,推导了用Lattice-boltzmann方法模拟火焰现象所使用的模型和实际计算步骤;针对特定类型的物体对象,提出了比较简洁的、适合计算机进行处理的新的边界问题的解决方法,避免了频繁的纹理映射的使用和复杂的微分方程的求解过程,使计算方法大为简化;并结合传统的粒子系统方法和实际情况,在计算机上实现了对火焰燃烧的模拟,基本达到了计算机图形学中的实时性要求.最后,给出了实际的火焰模拟效果图和不同方法的性能比较.

A New Method of Flame Simulation

This paper introduces in detail the foundation of physical and mathematic theory of the Lattice-Boltzmann method and deduces a model that uses the Lattice-Boltzmann method to simulate flames and real computing procedures.A new and simple method handled by computer to solve the boundary problem has been proposed,thus avoiding frequent texture mapping and complicated solution of differential equation and simplifying computing methods.By combining the conventional particle system method and the practical circumstances,the simulated combustion of flames in a computer is realized,which basically meets the real-time requirements.Finally,the simulation result of flames and performance comparison of different methods are given in this paper.