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

Jian Song Wu; Hui Zhang; Rui Yang; Robert A. Dalrymple; Alexis Hérault

doi:10.1016/S1001-6058(13)60429-1

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

Jian Song Wu, Hui Zhang, Rui Yang, Robert A. Dalrymple, Alexis Hérault

Civil and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	818-828
Number of pages	11
Journal	Journal of Hydrodynamics
Volume	25
Issue number	6
DOIs	https://doi.org/10.1016/S1001-6058(13)60429-1
State	Published - Dec 2013

Funding

* 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). Biography: WU Jian-song (1985-), Male, Ph. D., Lecturer

Keywords

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

ASJC Scopus subject areas

Modeling and Simulation
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/S1001-6058(13)60429-1

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

abstract = "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.",

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note = "Funding Information: * 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). Biography: WU Jian-song (1985-), Male, Ph. D., Lecturer",

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AU - Dalrymple, Robert A.

AU - Hérault, Alexis

N1 - Funding Information: * 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). Biography: WU Jian-song (1985-), Male, Ph. D., Lecturer

PY - 2013/12

Y1 - 2013/12

N2 - 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.

AB - 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.

KW - Graphical Proceeding Unit (GPU)

KW - Smoothed Particle Hydrodynamics (SPH) method

KW - city layouts

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KW - flood

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

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