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An efficient dynamic uniform Cartesian grid system for inundation modeling

Lookup NU author(s): Professor Qiuhua Liang



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


© 2017 Hohai University. A dynamic uniform Cartesian grid system was developed in order to reduce the computational time in inundation simulation using a Godunov-type finite volume scheme. The reduction is achieved by excluding redundant dry cells, which cannot be effectively avoided with a conventional Cartesian uniform grid system, as the wet area is unknown before computation. The new grid system expands dynamically with wetting, through addition of new cells according to moving wet-dry fronts. The new grid system is straightforward in implementation. Its application in a field-scale flood simulation shows that the new grid system is able to produce the same results as the conventional grid, but the computational efficiency is fairly improved.

Publication metadata

Author(s): Hou J-M, Wang R, Jing H-X, Zhang X, Liang Q-H, Di Y-Y

Publication type: Article

Publication status: Published

Journal: Water Science and Engineering

Year: 2017

Volume: 10

Issue: 4

Pages: 267-274

Print publication date: 01/10/2017

Online publication date: 14/12/2017

Acceptance date: 30/09/2017

Date deposited: 18/01/2018

ISSN (print): 1674-2370

ISSN (electronic): 2405-8106

Publisher: Editorial Office of Water Science and Engineering


DOI: 10.1016/j.wse.2017.12.004


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