Numerical modeling of dam-break on erodible bed by volume of fluid method
Publish place: The First National Conference on Mathematical Modeling and Computational Methods in Sciences and Engineering
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
MMCM01_004
تاریخ نمایه سازی: 19 فروردین 1400
Abstract:
The dam-break on granular-bed means the collapse of a static vertical water column on a rough moveable-bed. The purpose of this study was to determine the efficiency of analytical and volume of fluid (VOF) as an Eulerian method in predicting positive-wave behavior due to dam-break on granular substrates. The numerical simulations were implemented using commercial CFD-packages. While, in VOF method, the turbulence models, including Reynolds averaged Navier-Stokes (RANS), large eddy simulations (LES) as well as shallow-water equations (SWE) were used. Subsequently, the findings indicated that kinematic characteristics of dam-break wave and bed-scouring features are a function of initial height of water column of the reservoir as well as material characteristics. In this regard, material characteristics are roughness, specific density, diameter, friction angle, mobility and Shields’ parameter.
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Authors
Alireza Khoshkonesh
Ph.D. in hydraulic structures, department of water engineering, college of agriculture, university of Bu-Ali Sina, Hamedan, Iran
Fariba Ahmadi Dehrashid
Ph.D. candidate of hydraulic structures, department of water engineering, college of agriculture, university of Bu-Ali Sina, Hamedan, Iran
Saeed Gohari
Member of faculty, department of water engineering, college of agriculture, university of Bu-Ali Sina, Hamedan, Iran
Sajad Bajelvand
Msc student of hydraulic structures, department of water engineering, college of agriculture, university of Bu-Ali Sina, Hamedan, Iran