欧拉模型中多烟雾自由融合实时仿真算法.pdfVIP

第28 卷 第 5 期 计算机辅助设计与图形学学报 Vol. 28 No.5 2016 年5 月 Journal of Computer-Aided Design Computer Graphics May 2016 欧拉模型中多烟雾自由融合实时仿真算法 1,2) 1,2) 1,2)* 1,2) 1,2) 1,2) 唐 勇 , 毛菊珍 , 赵 静 , 吕梦雅 , 张利卫 , 唐川宁 1) (燕山大学信息科学与工程学院 秦皇岛 066004) 2) (河北省计算机虚拟技术与系统集成重点实验室 秦皇岛 066004) (zhaojing@ysu.edu.cn) : 为了弥补传统烟雾模拟在一个力场作用下运动态势的单调性, 提出一种基于欧拉模型的多烟雾自由融合实 时仿真算法. 首先根据场景和烟源位置等初始条件提出域划分算法, 从结构上解决烟雾自由融合问题; 然后以动量 守恒与能量守恒定律为依据, 采用局部控制与整体调整相结合的方式解决多烟雾融合时边界的不连续问题; 并针对 多烟雾的密度颜色绘制问题, 提出了多种颜色融合策略来表现烟雾的绘制细节; 最后利用GPU 并行计算方法和D3D 技术提高仿真效率, 获得多个烟雾自由融合过程的实时绘制效果. 实验结果表明, 该模型能够快速逼真地表现出烟 雾自由融合的过程. ：欧拉模型; 烟雾自由融合; 域划分算法; 局部控制; GPU ：TP391.41 Research on Real-Time Simulation Algorithm for Multi-smoke Freely Fusion with Eulerian Model Tang Yong1,2), Mao Juzhen1,2), Zhao Jing1,2)*, Lu Mengya1,2), Zhang Liwei1,2), and Tang Chuanning1,2) 1) (The College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004) 2) (The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province, Qinhuangdao 066004) Abstract: To address the limitation of using single force field in the traditional smoke simulation method, we propose a real-time simulation algorithm for the multi-smoke freely fusion process with an Eulerian model. First, we present a domain decomposition algorithm on the initial setting of the scene and the smoke source position which solves the problem in the structural layer. Second, based on the law of conservation of momentum and en- ergy, we combine the method of the local control with the integral adjustment to solve the discontinuous boundary problems.