期刊
JOURNAL OF HYDROINFORMATICS
卷 17, 期 4, 页码 518-533出版社
IWA PUBLISHING
DOI: 10.2166/hydro.2015.029
关键词
finite-volume Godunov-type scheme; graphics processing unit; Hi-PIMS; hydrodynamic model; shallow water equations; urban flood inundation
类别
资金
- National Natural Science Foundation of China [51379074]
- Chinese Government through the 'Recruitment Program of Global Experts'
- Engineering and Physical Sciences Research Council [1244178] Funding Source: researchfish
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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