Abstract
The finite element method for free surface flows is described. The topics presented include: the use of elements to discretize the solution domain, shape functions to interpolate values within these elements (with emphasis on linear and quadratic shape functions for one-and two-dimensional problems), application of Galerkin’s method to a simple differential equation, as well as to the Navier-Stokes and continuity equations, integration by parts, coordinate transformations, numerical integration, boundary conditions, solution of non-linear equations, and integrating the unsteady term. These methods are applied to the evaluation of the Galerkin integral for the continuity equation.
A portion of the material of this chapter is taken from Finnie, J.I., “Finite-Element Methods” in Chaudhry, M.H., Open-Channel Flow, 1993, with permission.
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Finnie, J.I. (1994). Finite-Element Methods for Free-Surface Flow. In: Chaudhry, M.H., Mays, L.W. (eds) Computer Modeling of Free-Surface and Pressurized Flows. NATO ASI Series, vol 274. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0964-2_5
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DOI: https://doi.org/10.1007/978-94-011-0964-2_5
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