Research Article
Nov 1970
Unsteady Free-Surface Flow Computations
Publication: Journal of the Hydraulics Division
Volume 96, Issue 11
Abstract
The solutions of the free-surface equations for subcritical unsteady one-dimensional flow are solved by four different formulations, each based on the method of characteristics. Advantages and disadvantages of each procedure are given. Examples emphasize the important features and corroborate a stability criteria that is presented. The implicit characteristics grid approach is the most accurate for overland flow situations or analysis of single channels; however, it is not useful for complex systems. The explicit rectangular grid is the simplest to program but may lead to instabilities if very large time increments are used. The latter method is also comparatively expensive for long duration transients.
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Published In
Journal of the Hydraulics Division
Volume 96 • Issue 11 • November 1970
Pages: 2241 - 2251
Copyright
© 1970 American Society of Civil Engineers.
History
Published in print: Nov 1970
Published online: Feb 3, 2021
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Authors
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E. Benjamin Wylie, M.ASCE
Prof., Dept. of Civ. Engrg., The Univ. of Michigan, Ann Arbor, M. I
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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.