Finite element modeling of flows in open-channel transitions

	Finite element modeling of flows in open-channel transitions
Iranian Journal of Science and Technology Transactions of Civil Engineering
شناسنامه علمی شماره، دوره 25، شماره 4، فروردین 2001، صفحه 669-680
شناسه دیجیتال (DOI): 10.22099/ijstc.2013.1122
چکیده
To analyze flows in channel expansions and contractions, two-dimensional, depth-averaged, unsteady flow equations are solved by using the two-step Taylor-Galerkin scheme. The 2-D, depth-averaged equations are written in a fully conservative form. The solution algorithm is based on an explicit time integration procedure which exploits the conservative properties of the governing equations. The unsteady flow model is used to obtain steady flow equations by treating the time variable as an iteration parameter and letting the solution converge to the steady state. The results of the mathematical model are compared with experimental data and other models. The capability of the model for handling mixed super- and sub-critical flows in a channel transition is demonstrated
کلیدواژه‌ها
Open channel flow؛ finite element؛ Taylor-Galerkin scheme؛ Unsteady flow؛ channel expansion and contraction

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