基于湖泊实景三维水环境的水动力模型可视分析技术  

Visual analysis technology of hydrodynamic model based on 3D water environment of lake real scene

作　　者：焦向伟 Jiao Xiangwei(School of Civil Engineering and Architecture,Xinjiang University,Urumqi 830000,China)

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830000

出　　处：《吉林水利》2023年第10期1-6,66,共7页Jilin Water Resources

摘　　要：传统研究中针对湖泊水动力学模拟结果不连续、不直观,不利于研究人员探究其复杂多变的内部规律。本文针对湖泊水体蓝藻爆发,将水动力模型、光滑粒子系统与湖泊水环境实景三维场景相结合,提出大规模粒子系统与水动力水质模型时空耦合方法,通过三维网格数值模拟方式创建粒子系统,利用水动力模型形成的流场数据(包括位置、流速、流向等),以粒子模拟蓝藻并将其初始化到网格体系中,通过流场驱动粒子运动,实现水动力水质模型在真实水下三维地形环境中实时计算和动态模拟推演。文章通过三维粒子系统模拟湖泊流场在地理环境下的演变过程,实现污染物(蓝藻)在内陆湖泊扩散和集聚效应的连续、动态可视化。本文的研究方法和结果为研究太湖蓝藻环境防治提供技术支持。The results of traditional lake hydrodynamic simulation are discontinuous and not intuitive,which is not conducive to researchers to explore the complex and changeable internal laws.Aiming at the cyanobacteria outbreak in lake water,this paper combined the hydrodynamic model and smooth particle system with the real three-dimensional scene of lake water environment,proposed the spatio-temporal coupling method of large-scale particle system and hydrodynamic water quality model,created the particle system through three-dimensional grid numerical simulation,and made use of the flow field data(including location,velocity,direction,etc.)formed by the hydrodynamic model.By simulating cyanobacteria with particles and initializing them into a grid system,the flow field drives the particles to achieve real-time calculation and dynamic simulation of the hydrodynamic water quality model in the real underwater three-dimensional terrain environment.In this paper,a three-dimensional particle system is used to simulate the evolution of the lake flow field under the geographical environment to realize the continuous and dynamic visualization of the diffusion and agglomeration effects of pollutants(cyanobacteria)in inland lakes.The research methods and results of this paper provide technical support for the study of environmental control of cyanobacteria in the Taihu Lake.

关 键 词：湖泊水动力模型 光线投射算法 粒子系统 实景三维水环境 

分 类 号：TV131.65[水利工程—水力学及河流动力学]