摘要
文章提出利用粒子系统和浓度场相结合的方法来模拟烟雾的运动与扩散．在粒子属性中加入一浓度函数，通过粒子作用半径及浓度函数的变化模拟烟雾的扩散，还通过粒子的运动及分裂反映风力场的作用．与原有的粒子系统相比，不仅增加了对烟雾扩散的描述，还可以用少量的粒子生成连续的浓度场，在很大程度上提高了计算速度．
In this paper, a method of combining particle system with density fields is presented to simulate smog movement and diffusion . By attaching a density function to the particle attributes, smog diffusion is simulated through the variance of particle effect radius and density functions, effect of turbulence is imitated through particle movement and fragmentation. Compared with the traditional particle system, this method can describe smog diffusion and produce continuous density fields with less particles, the computation is thus greatly speeded up. A quick algorithm for smog rendering is also presented for realtime simulation.
出处
《软件学报》
EI
CSCD
北大核心
1999年第6期647-651,共5页
Journal of Software
基金
国家自然科学基金
国家教育部博士点基金
浙江省自然科学基金
浙江大学曹光彪基金
关键词
动态模拟
粒子系统
烟雾
计算机图形学
Dynamic simulation, particle system, density field, ray casting.
