| 基于物理的烟雾动画 |
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| 引用本文： | 周永霞,石教英,郁佳荣. 基于物理的烟雾动画[J]. 计算机辅助设计与图形学学报, 2006, 18(9): 1367-1371 |
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| 作者姓名： | 周永霞 石教英 郁佳荣 |
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| 作者单位： | 浙江大学CAD&CG国家重点实验室,杭州,310058;浙江大学CAD&CG国家重点实验室,杭州,310058;浙江大学CAD&CG国家重点实验室,杭州,310058 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 基于物理的烟雾模拟中，需要求解Navier-Stokes偏微分方程组．通过量纲分析，简化了该方程．在求解对流项时采用半拉格朗日方法，为弥补该方法带来的数值耗散，引入了高阶精度紧致格式，在较粗的网格上亦可得到较高精度的导数值．实验结果表明：该算法效果比较真实，速度较快．
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| 关 键 词： | 计算机动画 基于物理 紧致格式 |
| 收稿时间： | 2005-09-30 |
| 修稿时间： | 2006-03-27 |
Physics-Based Animation of Smoke |
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| Zhou Yongxia,Shi Jiaoying,Yu Jiarong. Physics-Based Animation of Smoke[J]. Journal of Computer-Aided Design & Computer Graphics, 2006, 18(9): 1367-1371 |
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| Authors: | Zhou Yongxia Shi Jiaoying Yu Jiarong |
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| Abstract: | In the physics-based simulation of smoke, a set of Navier-Stokes partial differential equations need to be solved. In solving the problem, we use the Dimension Analysis method to simplify the equations. While solving the advection item, the semi-Lagrangian scheme is adopted. For the numerical dissipation inherent in the semi-Lagrangian scheme, a compact scheme highly accurate was introduced to improve the accuracy on coarse grids. It is shown that these methods can efficiently produce realistic results. |
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| Keywords: | computer animation physics-based compact scheme |
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