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Improved Compartmental Modeling and Application to Three-Phase Contaminant Transport in Unsaturated Porous Media
Publisher: American Society of Civil Engineers
Abstract: The compartmental modeling approach has been widely used for simulating contaminant transport in porous media and surface waters. Yet a commonly used compartmental model that has only first-order accuracy may introduce ...
Analysis of Recharge in Anisotropic, Layered, Saturated‐Unsaturated Soil
Publisher: American Society of Civil Engineers
Abstract: A numerical investigation of artificial recharge in multilayered, anisotropic, unconfined porous media is performed for radial flow configuration. The numerical studies, carried out with a saturated‐unsaturated flow model, ...
Optimization Models for Wastewater Reuse in Irrigation
Publisher: American Society of Civil Engineers
Abstract: Mathematical models are formulated to develop management guidelines for an integrated wastewater reuse plan involving the use of reclaimed wastewater to irrigate summer crops. A linear‐programming allocation model is used ...
Reservoir Operation by Linear and Dynamic Programming
Publisher: American Society of Civil Engineers
Abstract: The operation of reservoirs often requires frequent updating of the results of the operation model. This is mainly because of errors involved in forecasting the natural inflows to the reservoirs or demands for water and ...
Reservoir Operation: Choice of Objective Functions
Publisher: American Society of Civil Engineers
Abstract: An efficient algorithm for the real‐time monthly operation of a multipurpose reservoir is presented. The model is a combination of linear programming (used for month‐by‐month optimization) and dynamic programming (used for ...
Optimizing Spillway Capacity with Uncertainty in Flood Estimator
Publisher: American Society of Civil Engineers
Abstract: The spillway design flood is a function of social, moral, economic, and technological restrictions. Given the significant initial cost of a spillway and the very high cost of dam failure and downstream damages, the economic ...
Nonlinear Runoff Modeling: Parameter Identification
Publisher: American Society of Civil Engineers
Abstract: A nonlinear functional rainfall‐runoff model is applied to an urban watershed (Curotte‐Papineau, Montréal) and the results are compared with those from the ILLUDAS model. Simulations are performed using a 5 minute time ...
Fitting Minima of Flows Via Maximum Likelihood
Publisher: American Society of Civil Engineers
Abstract: A statistical method for deriving frequency distribution functions of minima of streamflows is presented. An innovative feature of the proposed methodology is that it does not require the specification of a parent distribution ...
Chance‐Constrained Model for Management of Stream‐Aquifer System
Publisher: American Society of Civil Engineers
Abstract: A chance‐constrained optimization model for a stream‐aquifer system is developed using an approximate solution for the transient drawdown of the water table of an aquifer by a well operating near a river. The model explicitly ...
Aqueduct and Reservoir Capacities for Distribution Systems
Publisher: American Society of Civil Engineers
Abstract: The determination of the design capacity and operation policy of water delivery systems for farming areas is complicated by the temporal variability of demands and the corresponding use of delivery capacity, the probabilistic ...