Comparison of one- and two-dimensional flood modeling in urban environments
作者: Sulochan DhungelMichael E. BarberRobert L. Mahler
作者单位: 1Civil and Environmental Engineering, University of Utah, Salt Lake City, UT, U.S.A.
2Soil Science Division, University of Idaho, Moscow, ID, U.S.A.
刊名: International Journal of Sustainable Development and Planning, 2019(04), pp.356-366
来源数据库: WIT Press
DOI: 10.2495/SDP-V14-N4-356-366
关键词: HEC-RASLiDARMesh generationOverbank storageSRH-2D
原始语种摘要: The US Army Corps of Engineers Hydrologic Engineering Center recently released version of the River Analysis System (HEC-RAS) has added two-dimensional (2D) modeling capabilities to a decade old one-dimensional (1D) model dating back to HEC-2 developed in the 1970s. Several recent studies have indicated that 2D flood modeling is preferable in urban environments to better account for the complex topography caused by infrastructure. The newest version of HEC-RAS also allows users to simulate unsteady flow using either the Saint Venant equations or the diffusion wave (DW) equations using an implicit finite volume algorithm. The Saint Venant solution allows for turbulence and Coriolis effects to be accounted for with momentum additions. While applicable to a wider range of flood problems, the...
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  • urban 城市
  • modeling 制祝型
  • flood 洪水
  • dimensional 量纲的
  • conclude 结论
  • momentum 动量
  • difficult 困难的
  • recently 近来
  • implicit 隐含的
  • solution 溶液