Research Article
Dec 1979
Finite Element Model of 2-D Stratified Flow
Publication: Journal of the Hydraulics Division
Volume 105, Issue 12
Abstract
A finite element model for the study of hydrodynamics and salt transport in partially-mixed estuaries is presented. The model is based on the laterally integrated time varying equations of motion, continuity and conservation of salt. The Boussinesq approximation is applied to the resulting two-dimensional equations and a simple equation of state is used to relate salinity to density. Although a rigorous mathematical proof cannot be given it is heuristically postulated that the correct boundary conditions, defining a well-posed problem, must consist of applied stresses or strain rates in cases with internal (Reynolds) stresses included. Without the internal stresses the pressure or the normal strain rate only can be prescribed. A simple application demonstrates the ability of this model to accurately represent the moving surface. Another example illustrates the significance of ocean boundary conditions on the internal solution.
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Published In
Journal of the Hydraulics Division
Volume 105 • Issue 12 • December 1979
Pages: 1473 - 1485
Copyright
© 1979 American Society of Civil Engineers.
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Published in print: Dec 1979
Published online: Feb 3, 2021
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Authors
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John D. Wang, AM.ASCE
Assoc.Prof., Div. of Ocean Engrg., Rosenstiel School of Marine and Atmospheric Sci., Univ. of Miami, Fla.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.