Computational simulation of flow over stepped spillways

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dc.contributor.author Tabbara, Mazen
dc.contributor.author Chatila, Jean
dc.contributor.author Awwad, Rita
dc.date.accessioned 2016-02-03T09:32:37Z
dc.date.available 2016-02-03T09:32:37Z
dc.date.copyright 2005
dc.date.issued 2016-05-06
dc.identifier.issn 0045-7949
dc.identifier.uri http://hdl.handle.net/10725/2991
dc.description.abstract Numerical simulations of water flow over stepped spillways with different step configurations are presented. The finite element computational fluid dynamics module of the ADINA software was used to predict the main characteristics of the flow. This included the determination of the water surface, the development of skimming flow over corner vortices, and the determination of energy dissipation. Since the actual flow is turbulent, the k–ε flow model was used. A two-phase solution process was adopted in order to optimize the overall simulation efficiency. In the first phase, a simple yet reasonable water surface consisting of three straight lines was used as an initial guess and was treated as a fixed wall. In the second phase, the results from the first phase were used as initial conditions and the water surface was treated as a free surface that evolved to attain a steady state configuration. For all the cases considered, the predicted water surface profile over the entire length of the spillway was in close agreement with the experimentally measured water surface profile. The predicted energy dissipation was also comparable to the experimentally attained values. en_US
dc.language.iso en en_US
dc.title Computational simulation of flow over stepped spillways en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 199890270 en_US
dc.author.idnumber 199690300
dc.author.idnumber 199906210
dc.author.woa N/A en_US
dc.author.department Civil Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Computers & Structures en_US
dc.journal.volume 83 en_US
dc.journal.issue 27 en_US
dc.article.pages 2215-2224 en_US
dc.keywords Stepped spillway en_US
dc.keywords Numerical en_US
dc.keywords Experimental en_US
dc.keywords Modeling en_US
dc.keywords Free surface en_US
dc.keywords Finite element en_US
dc.keywords Turbulent flow en_US
dc.identifier.doi http://dx.doi.org/10.1016/j.compstruc.2005.04.005 en_US
dc.identifier.ctation Tabbara, M., Chatila, J., & Awwad, R. (2005). Computational simulation of flow over stepped spillways. Computers & structures, 83(27), 2215-2224. en_US
dc.author.email mtabbara@lau.edu.lb
dc.author.email jchatila@lau.edu.lb
dc.author.email rita.awwad@lau.edu.lb
dc.identifier.url http://www.sciencedirect.com/science/article/pii/S0045794905002014

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