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

Research output: Contribution to journalArticle

24 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 languageEnglish (US)
Pages (from-to)818-828
Number of pages11
JournalJournal of Hydrodynamics
Volume25
Issue number6
DOIs
StatePublished - Dec 2013

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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