IAHR Document Library

« Back to Library Homepage « Proceedings of the 20th IAHR APD Congress (Colombo, 2016)

Modeling Urban Flood Forces on Buildings Using SPH Method

Author(s): Sohaib Alahmed; Qingping Zou

Linked Author(s):

Keywords: Impact force; Water elevation; Velocity distribution; 3D model; SPH

Abstract: Floods are the most common natural hazards in many places on Earth. Urban flooding, in particular, could be extremely dangerous and destructive, it is therefore of great important to improve our predictive ability and understanding of this problem in order to prevent and mitigate the flood risk. Smoothed Particle Hydrodynamics (SPH) method has recently become popular forstudyingfree surface flow problems such as urban flood events. Wuet al (2013) implemented SPH model to simulate a complex 3-D dam break in an urban area and the behavior of flooding water flowing into underground spaces and across the buildings. Aureli et al (2015) used SPH method to model a dam breaking senario overan obstacle in order to evalute the force due to wave impact. These SPH numerical results have demonstratedthe ability and the efficiency of this method for predicting the complex flow features during urban flood events. Modeling a three dimensional flash flood event on an idealized city by using SPH method coupled with Graphical Processing Unit (GPU) is presented in this paper. The aim of the study is to examine the effect of the building layout in a city on flood behavior. We will investigate the force on the buildings due towaveimpact. Unlike previous study, we will calculate the force values on each building in a city system in the flow direction and the direction perpendicular to flow direction. The time evolution of water depth and velocity distribution will also be examined.


Year: 2016

Copyright © 2024 International Association for Hydro-Environment Engineering and Research. All rights reserved. | Terms and Conditions