摘要
在可视化的数据流模型中引入误差处理,对3D流场的数值粒子跟踪进行误差分析.针对Runge-Kutta方法的粒子跟踪,讨论了局部误差控制方法,同时采用Richardson外推、改变单步误差容限重复积分等方法来估计全局跟踪误差,最后给出了几种误差可视化方法.误差可视化结果图像清楚地反映出了粒子轨迹的可信度.
In order to analyze particle tracing error in 3D flow field, different forms of error disposal are introduced into visualization data flow model. Technique controlling local error for particle tracing using Runge-Kutta method are discussed firstly. By Richardson extrapolation and changing tolerance, global tracing errors could be estimated. At last, several methods of error visualization are brought forward. The final images present the accuracy of tracking path better.
出处
《装备指挥技术学院学报》
2004年第5期95-98,共4页
Journal of the Academy of Equipment Command & Technology
基金
部委级资助项目