Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/1321
Title: BEM numeric simulation of spillway flows with discontinuous linear elements.
Authors: Mello, Carlos Eduardo Ferraz de
Azevedo, José Paulo Soares de
Keywords: Spillway
Iterative procedure
Boundary element method
Free surface flow
Issue Date: 2002
Citation: MELLO, C. E. F. de; AZEVEDO, J. P. S. de. BEM numeric simulation of spillway flows with discontinuous linear elements. In: First South-american Congress on Computational Mechanics - MECOM 2002, 2002, Santa Fe. Mecanica Computacional, 2002. v. 11. p. 1306-1316. Disponível em: <http://www.amcaonline.org.ar/ojs/index.php/mc/article/viewFile/951/902>. Acesso em: 13 ago. 2012.
Abstract: The study of gravity free surface flows presents difficulties as the nonlinearity of the dynamic boundary condition in the free surface, and also the fact that the location of this surface is not known a priori. Traditionally, this phenomenon has been investigated by physical models, but the progress of computer science and numeric methods has been allowing more and more the successful use of mathematical models to simulate this type of flow. This work presents a boundary element method (BEM) numeric simulation of spillway flows with discontinuous linear elements. The solution procedure involves an iterative process in the determination of the free surface. The Newton-Raphson method is adopted together with the use of pseudo-nodes on the free surface and an empiric step factor (or damping factor) which controls the stability and the rate of convergence. An example of WES standard spillway shape is presented. The obtained results are compared with experimental data and they check the efficiency and good precision of the adopted method.
URI: http://www.repositorio.ufop.br/handle/123456789/1321
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