Jaime R. Calzada , Y. Joseph Zhang , Fei Ye , Linlin Cui
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引用次数: 0
Abstract
We develop a new automatic tool for effectively generating large unstructured meshes suitable for coastal compound flooding studies. The new tool (Geomesh) takes only digital elevation data as inputs and is free of any other artificial manipulation, consistent with the philosophy of the target model (SCHISM) it attempts to serve. Geomesh starts with modules of the popular package JIGSAW for delineating geometric features and specifying size function used in mesh generation, with improvements added to drastically improve efficiency for large applications. To accommodate SCHISM's need for hybrid triangular-quadrilateral mesh, we develop a new tool for quadrilateral generation and then use a constraint triangulator to merge the quads into the triangular mesh. We demonstrate the performance of a mesh generated using Geomesh for US coast using SCHISM 2D in simulating the compound surge during Hurricane Harvey. The tool has potential to greatly speed up the mesh generation process in large domains.
期刊介绍:
Environmental Modelling & Software publishes contributions, in the form of research articles, reviews and short communications, on recent advances in environmental modelling and/or software. The aim is to improve our capacity to represent, understand, predict or manage the behaviour of environmental systems at all practical scales, and to communicate those improvements to a wide scientific and professional audience.