摘要
河流仿真技术是流域数字孪生的重要组成部分,当前实现物理河流向虚拟流域保真建模还有不足。以实测地形、遥感影像与水文数据为基础,基于水文模型计算的沿程水面线,通过UE5与Fluid Flux插件渲染,重构、编译蓝图、训练数据资产,克服坐标系统差异,完成从二维水动力计算到三维模型的转换,最终实现与虎渡河真实场景有较高相似度的仿真效果。校验结果表明模型误差较小,可以反映真实情况。构建的仿真模型能展现不同时期的水流状态、水位与堤防相对高差、人工爆破分洪、水下情景等,通过参数调整,能进行不同预演方案之间的比较,为防洪决策提供可视化支撑。
River simulation technology plays a crucial role in watershed digital twin.However,current precise modelling of physical rivers to virtual watershed faces several deficiencies.To address such deficiencies,a 3D hydrodynamic model was developed in this study based on terrain measurements,remote sensing images,hydrological data,and water surface line calculated by hydrological model.The UE5 engine and Fluid Flux plug-in rendering was employed in the model.Blueprints were reconstructed and compiled,data assets were trained and coordinate system disparities were reconciled to finally achieve high fidelity simulation of the water flow of Hudu River.Calibration results indicate that the present model accurately reflects real-world conditions with small errors.The simulation model depicts the water flow dynamics during different periods,the relative height difference between water level and embankment,the artificial flood diversion blasting,and underwater scenarios.Parameter adjustments enable comparative analysis of different scenarios,offering visualization support for flood control decision-making.
作者
鲁瀚友
赵文刚
蒋婕妤
王在艾
刘晓群
李志威
LU Han-you;ZHAO Wen-gang;JIANG Jie-yu;WANG Zai-ai;LIU Xiao-qun;LI Zhi-wei(Hunan Institute of Water Resources and Hydropower Research,Changsha 410007,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)
出处
《长江科学院院报》
CSCD
北大核心
2024年第8期157-163,共7页
Journal of Changjiang River Scientific Research Institute
基金
国家重点研发计划项目(2022YFC3201804)
国家自然科学基金区域创新发展联合基金项目(U22A20563)
湖南省水利科技项目(XSKJ2022068-12,XSKJ2022068-13,XSKJ2022068-19,XSKJ2021000-08,XSKJ2023059-14)。
关键词
大场景河流仿真
数字孪生
UE5引擎
洪水预演
虎渡河
large scene river virtual simulation
digital twin
UE5 engine
flood scenario preview
Hudu River
