Numerical modeling of dam-break flood through intricate city layouts including underground spaces using GPU-based SPH method

作     者：吴建松 张辉 杨锐 DALRYMPLE Robert A. HéRAULT Alexis WU Jian-song;ZHANG Hui;YANG Rui

作者机构：Faculty of Resources and Safety EngineeringChina University of Mining and Technology Department of Engineering PhysicsTsinghua University Department of Civil EngineeringJohns Hopkins University Conservatoire National des Arts et Métier 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2013年第25卷第6期

页      面：818-828页

核心收录：

学科分类：08[工学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：Project supported by the National Basic Research Development Program of China(973 Program,No.2012CB719705) the National Natural Science Foundation of China(Grant Nos.91024032,70833003) 

主　　题：dam-break flood city layouts Graphical Proceeding Unit (GPU) Smoothed Particle Hydrodynamics (SPH) method 

摘      要：This paper applies the meshfree Smoothed Particle Hydrodynamics （SPH） method with Graphical Processing Unit （GPU） parallel computing technique to investigate the highly complex 3-D dam-break flow in urban areas including underground spaces. Taking the advantage of GPUs parallel computing techniques, simulations involving more than 107 particles can be achieved. We use a virtual geometric plane boundary to handle the outermost solid wall in order to save considerable video card memory for the GPU computing. To evaluate the accuracy of the new GPU-based SPH model, qualitative and quantitative comparison to a real flooding experiment is performed and the results of a numerical model based on Shallow Water Equations （SWEs） is given with good accuracy. With the new GPU-based SPH model, the effects of the building layouts and underground spaces on the propagation of dambreak flood through an intricate city layout are examined.