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New prospects for computational hydraulics by leveraging high-performance heterogeneous computing techniques

Journal of Hydrodynamics 2016年第6期28卷 977-985页

作者： Qiuhua LIANG Luke SMITH Xilin XIA Hebei University of Engineering Handan 056038 China School of Civil Engineering and Geosciences Newcastle University Newcastle upon Tyne UK

In the last two decades, computational hydraulics has undergone a rapid development following the advancement of data acquisition and computing technologies. Using a finite-volume Godunov-type hydrodynamic model, this work demonstrates the promise of modern high-performance computing technology to achieve real-time flood modeling at a regional scale. The software is implemented for high-performance heterogeneous computing using the OpenCL programming framework, and developed to support simulations across multiple GPUs using a domain decomposition technique and across multiple systems through an efficient implementation of the Message Passing Interface （MPI） standard. The software is applied for a convective storm induced flood event in Newcastle upon Tyne, demonstrating high computational performance across a GPU cluster, and good agreement against crowd- sourced observations. Issues relating to data availability, complex urban topography and differences in drainage capacity affect results for a small number of areas.

关键词： computational hydraulics high-performance computing flood modeling shallow water equations shock-capttLring hydrodynamic model

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Street floods in Metro Manila and possible solutions

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Journal of Environmental Sciences 2017年第9期29卷 39-47页

作者： Alfredo Mahar Lagmay Jerico Mendoza Fatima Cipriano Patricia Anne Delmendo Micah Nieves Lacsamana Marc Anthony Moises Nicanor Pellejera III Kenneth Nino Punay Glenn Sabio Laurize Santos Jonathan Serrano Herbert James Taniza Neil Eneri Tingin National Institute of Geological Sciences University of the PhilippinesQuezon City 1101Philippines Nationwide Operational Assessment of Hazards PhiI-LiDAR 1flood Modelling Component UP NIGSQuezon City 1101Philippines

Urban floods from thunderstorms cause severe problems in Metro Manila due to road traffic. Using Light Detection and Ranging（Li DAR）-derived topography, flood simulations and anecdotal reports, the root of surface flood problems in Metro Manila is *** of flood-prone areas are along the intersection of creeks and streets located in topographic lows. When creeks overflow or when rapidly accumulated street flood does not drain fast enough to the nearest stream channel, the intersecting road also gets *** solutions include the elevation of roads or construction of well-designed drainage structures leading to the creeks. Proposed solutions to the flood problem of Metro Manila may avoid paralyzing traffic problems due to short-lived rain events, which according to Japan International Cooperation Agency（JICA） cost the Philippine economy 2.4 billion pesos/day.

关键词： flood modeling LiDAR Urban flooding

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A Framework for a Subwatershed-Scale Screening Tool to Support Development of Resiliency Solutions and flood Protection Priority Areas in a Low-Lying Coastal Community

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Journal of Geoscience and Environment Protection 2021年第10期9卷 180-205页

作者： Frederick Bloetscher Gerardo Rojas Anthony Abbate Tucker Hindle Jeffery Huber Richard Jones Weibo Liu Daniel Eduardo Meeroff Diana Mitsova Sudhagar Nagarajan Glen Oglesby Colin Polsky Hongbo Su Eva Suarez Ramesh Teegavarapu Jared Weaver Zhixiao Xie Yan Yong Caiyun Zhang Florida Atlantic University Boca Raton USA

flood risk analysis is the instrument for local officials to create a sound strategy and adaptation plans for the impacts of inundation due to heavy rains, climate change and sea level rise. Hence, cities with aging infrastructure are retrofitting their stormwater management systems to mitigate the impacts. However determining the most at risk areas and the options for corrections is more challenging. As a result, there is an urgent need to develop a screening tool to analyze watersheds and identify the most at-risk areas. High-quality, open source data and sophisticated spatial analysis techniques allow engineers to create innovative ways to conduct watershed wide inundation analysis. In this study, the investigators developed a screening tool to identify at-risk properties by combining readily available data on topography, groundwater, surface water, tidal information for coastal communities, soils, open space, and rainfall data. Once the screening tool is developed, the means to identify and prioritize improvements to be funded with scarce capital funds is the next step. A tool box of solutions was developed to address flood risk and vulnerability. Testing of the screening tool was conducted in Broward County, Florida and shows encouraging results. Comparison with FEMA flood maps and repetitive

关键词： flooding Watershed flood modeling Screening Tool Risk Infrastructure

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