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Title: COSFLOW: a finite element model coupling one-dimensional canal, two-dimensional overland, and three-dimensional subsurface flow
Authors: Pennsylvania State University. Department of Civil and Environmental Engineering
Yeh, Gour-Tsyh (George), 1940-
Cheng, Jing-Ru
Li, Ming-Hsu
Cheng, Hwai-Ping
Lin, Hsin-Chi J.
Keywords: Darcy's velocity
Galerkin finite element method
Interaction between overload and subsurface flow
Manning equation
One-dimensional channel flow
Overland flow
Richard's equation
Subsurface flow
Issue Date: Sep-1997
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (U.S. Army Engineer Waterways Experiment Station) ; CHL-97-20.
Description: Technical report
This report presents the user's manual of COSFLOW, This report presents the user's manual of COSFLOW, which is a three-dimensional Finite Element Model coupling one-dimensional (1-D) Canal, two-dimensional (2-D) Overland, and three-dimensional (3-D) Subsurface FLOW. The 1-D channel flow is described by water budget under the assumption that equilibrium within each channel reach is achieved instantaneously. The 2-D overland flow is modeled with a diffusive wave approach. Retention ponds included in the overland flow are simulated with a water budget approximation. In this version, solute transport is not considered in the coupled system; but for the future consideration, the subsurface solute transport module is included in the computer code. In this report, however, emphasis is given to the coupling of flow between 3-D subsurface, such as density-dependent transport and salt intrusion, can be found in the user's manual of 3DFEMFAT. In the channel module, the volumetric flow rates from the channel to the subsurface nodes, or vice versa, are computed within each channel time-step, and are accumulated within each subsurface time-step (one subsurface time-step usually includes many channel time-steps). The pumping from the channel can be directed to another channel reach, a subsurface node, or a retention pond, which is designed to store excess water in canal.
Appears in Collections:Technical Report

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