不同属性烟雾融合过程可视化建模与实时绘制  

Visualization modeling and real-time rendering for fusion process of different property multi-smoke

作　　者：唐勇[1,2] 毛菊珍[1,2] 吕梦雅[1,2] 张利卫[1,2] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004 [2]河北省计算机虚拟技术与系统集成重点实验室,河北秦皇岛066004

出　　处：《燕山大学学报》2015年第5期448-452,共5页Journal of Yanshan University

基　　金：国防重大专项资助项目(2014AT09)

摘　　要：为了快速精准绘制真实世界中各种各样的多烟雾融合现象,提出一种基于欧拉法的实时有效的烟雾融合模型。首先,提出域划分算法,从结构层解决了多烟雾自由随机运动的描述问题;其次,利用GPU的并行能力大幅提高了N-S方程求解速度,获得多达7种不同属性烟雾融合过程的实时绘制;再次,实现Ray-casting(光线投射)算法,清晰地表现出烟雾融合的扩散细节;最后,调节温度、速度、扩散系数和浓度等烟雾运动影响因子,灵活控制烟雾融合过程。实验表明,所做工作能够快速真实地模拟不同属性烟雾的融合。In this paper,a real-time and effective Euler approach is introduced for multiple-smoke fusion. First of all,the domain decomposition algorithm is presented to solve the free random movement problem of multiple-smoke fusion in structural layer. Secondly,the speed of solving N-S equations is improved by the GPU, and as many as seven different attributes of smoke fusion process is got. Thirdly,the spread of smoke fusion details is shown clearly through realization Ray-casting algorithm. Finally,more smoke s interesting fusion details is got by controlling the smoke flow impact factors,such as temperature,speed,diffusion coefficient,concentration,etc. So the method can simply and effectively simulate real-time multiple-smoke fusion.

关 键 词：欧拉法 烟雾融合 域划分算法 GPU 光线投射 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]