DEVELOPMENT AND IMPLEMENTATION OF WEB-BASED DAM-BREAK FLOOD INUNDATION ANALYSIS CAPABILITIES

摘要

The Dams Sector Analysis Tool (DSAT) is a Web-based tool that provides users withsecure access to a wide range of analytical capabilities. In particular, DSAT providesusers with access to the advanced flood modeling capabilities developed by the NationalCenter for Computational Hydroscience and Engineering of the University of Mississippi(UM-NCCHE). Implementation of this capability is the result of a joint effort betweenUM-NCCHE and the U.S. Department of Homeland Security (DHS), Office ofInfrastructure Protection. The flood modeling computational tools were developed atUM-NCCHE with support provided by the DHS-sponsored Southeast Region ResearchInitiative (SERRI) Program at the Oak Ridge National Laboratory.To run an automated dam-break flood simulation, the user provides the basic input datausing the DSAT Viewer. The data defining the scenario to be simulated is transmitted toa dedicated NCCHE server, which hosts the Decision Support System for WaterInfrastructural Security (DSS-WISE). Special procedures allow the preparation of thecomputational domain and the input data fully automatically without user intervention.The simulations are carried out using the DSS-WISE, which employs a multi-core, multithreadedimplementation of a first-order, shock-capturing finite volume scheme thatsolves the full dynamic shallow water equations governing the flow of flood waters overcomplex topography. The solver can handle mixed flow regimes (subcritical,transcritical, supercritical). Once the simulation is completed, the output files,representing the flood depth and flood arrival-time grids, can be uploaded on the DSATviewer for further analysis.