泄洪雾化的粒子系统模拟及三维可视化  

Particle system-based simulation of flood discharge atomization and 3-D visualization

作　　者：刘东海[1] 崔广涛[1] 钟登华[1] 彭文怀[1] 

机构地区：[1]天津大学建筑工程学院

出　　处：《水利学报》2005年第10期1194-1198,1203,共6页Journal of Hydraulic Engineering

基　　金：国家自然科学基金资助项目(50179023);高速水力学国家重点实验室开放基金(0404)

摘　　要：本文在泄洪雾化水流基本运动模式控制下,提出了基于粒子系统的泄流运动及雾化降雨的三维模拟与可视化方法,并且基于地理信息系统(GIS)技术建立了坝区地形及建筑物数字模型,实现了泄流水舌挑射运动、沿程掺气扩散、跌水碰溅以及雾化降雨场景的逼真模拟,为工程人员提供了一个可视化的设计与决策环境,并可为进一步研究“虚拟泄洪”提供理论基础。The 3-D simulation and visualization of flip bucket jet flow and its atomization are realized by means of particle system-based method. The equation of trajectory and equation of diffusion for jet, the momentum conservation equation of the impinging of jet into the water cushion as well as the kinetic equation of the water drops are adopted as the control equations, and the particle system is applied to simulate the movement of jet, variations of jet thickness and width as well as the impinging phenomenon. The jet flow is regarded as the integration of water drops（or particles） and every particle possesses the attributes of space position, moving velocity, acceleration, size, shape and existing duration. At the same time, the digital visualization design of topography and structures, decision-making environment are established based on the GIS system. Thus, the scene of the atomization process can be visually simulated.

关 键 词：泄洪雾化 模拟 物理机理 粒子系统 三维可视化 地理信息系统(GIS) 

分 类 号：TV125.2[水利工程—水文学及水资源] TP319.4[自动化与计算机技术—计算机软件与理论]