摘要
通过Navier-Stokes方程建立烟雾流体场的物理模型,以保证视觉的真实感。为了保证运算的实时性,烟雾流体场以二维网格空间(MN)为基础,在每个网格单元的中心点,采用简化的流体方程求解算法计算烟雾的速度场分布和浓度场分布,然后通过双线性插值得到整幅图像中每个像素的浓度。将烟雾模拟技术用于图像的显示特技中,以产生图像消散成烟雾的视觉效果,得到了比较满意的模拟效果。
By using Navier-Stocks equation, we established a physical process of simulating fluid flow to get a vivid visual presentation. Meanwhile, in order to assure real-time calculation, smoke fluid field was modeled on a square grid and we applied a simplified fluid equation to represent the distribution of smoke velocity and density fields at the center of each grid cell, then the amount of density that every pixel carded is obtained by bilinear interpolating The presented algorithm is suitable to show the dissipating process of titles on screen.
出处
《工程图学学报》
CSCD
北大核心
2005年第5期69-73,共5页
Journal of Engineering Graphics
