A high-performance integrated hydrodynamic modelling system for urban flood simulations | Zendy

Qiuhua Liang | Zendy; Luke Smith | Zendy

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A high-performance integrated hydrodynamic modelling system for urban flood simulations

Author(s) -

Qiuhua Liang,

Luke Smith

Publication year - 2015

Publication title -

journal of hydroinformatics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.654

H-Index - 50

eISSN - 1465-1734

pISSN - 1464-7141

DOI - 10.2166/hydro.2015.029

Subject(s) - riemann solver , flood myth , solver , shallow water equations , levee , event (particle physics) , environmental science , computer science , riemann problem , geology , meteorology , mathematics , geotechnical engineering , mechanics , riemann hypothesis , finite volume method , physics , geography , mathematical analysis , oceanography , archaeology , quantum mechanics , programming language

A new High-Performance Integrated hydrodynamic Modelling System (Hi-PIMS) is tested for urban flood simulation. The software solves the two-dimensional shallow water equations using a first-order accurate Godunov-type shock-capturing scheme incorporated with the Harten, Lax and van Leer approximate Riemann solver with the contact wave restored (HLLC) for flux evaluation. The benefits of modern graphics processing units are explored to accelerate large-scale high-resolution simulations. In order to test its performance, the tool is applied to predict flood inundation due to rainfall and a point source surface flow in Glasgow, Scotland, and a hypothetical inundation event at different spatial resolutions in Thamesmead, England, caused by embankment failure. Numerical experiments demonstrate potential benefits for high-resolution modelling of urban flood inundation, and a much-improved level of performance without compromising result quality.

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