Dynamic Wave Study of Flow in Tidal Channel System of San Juan River
Publication: Journal of Hydraulic Engineering
Volume 129, Issue 7
Abstract
In this work the complete equations of one-dimensional unsteady flow in open channels in integral form, and compatibility equations at the junctions of a channel network, are solved numerically. Analytical integration in space is used between each pair of consecutive irregular sections of a channel, and the nonprismatic term is expressed in terms of uncoupled functions of the geometry at the sections. The linearized system of equations for each time interval is solved by an elimination method based on a double-sweep algorithm. The model is applied to the estuary of the San Juan River in Venezuela, where oscillating currents by effect of semidiurnal tides take place and the amplitude of the wave at the mouth is amplified toward the inland direction. Alternating drying and filling is simulated by means of slight modifications in the bed geometry of upper river sections. Measured water elevation and flow rates available at two stations are used to calibrate the model, and a very accurate adjustment of the tidal levels observed in the river is obtained.
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Information
Published In
Journal of Hydraulic Engineering
Volume 129 • Issue 7 • July 2003
Pages: 519 - 526
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Dec 19, 2000
Accepted: Oct 1, 2002
Published online: Jun 13, 2003
Published in print: Jul 2003
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