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Making the <i>Journal</i> More Valuable to Practicing Engineers
Publisher: American Society of Civil Engineers
Design Stream Flows Based on Harmonic Means
Publisher: American Society of Civil Engineers
Abstract: Design stream flows are frequently used in water pollution control programs to provide adequate protection against pollutant exposure periods of a given duration. An analysis of the effect that simple stream flow dilution ...
Environmental Engineering Forum: When Has a Model Been Sufficiently Calibrated and Tested to Be Put to Efficient Use?
Publisher: American Society of Civil Engineers
Discussion of “Solution for Water Distribution Systems under Pressure-Deficient Conditions” by Wah Khim Ang and Paul W. Jowitt
Publisher: American Society of Civil Engineers
Unified Framework for Deriving Simultaneous Equation Algorithms for Water Distribution Networks
Publisher: American Society of Civil Engineers
Abstract: The known formulations for steady-state hydraulics within looped water distribution networks are rederived in terms of linear and nonlinear transformations of the original set of partly linear and partly nonlinear equations ...
Scale-Model Studies of Mixing in Drinking Water Storage Tanks
Publisher: American Society of Civil Engineers
Abstract: Storage tanks and reservoirs are commonly used in drinking water distribution systems to equalize pumping requirements and operating pressures, and to provide emergency water for fire-fighting and pumping outages. Poor ...
Numerical Methods for Modeling Water Quality in Distribution Systems: A Comparison
Publisher: American Society of Civil Engineers
Abstract: A comparison is made between the formulation and computational performance of four numerical methods for modeling the transient behavior of water quality in drinking-water-distribution systems. Two are Eulerian-based (the ...
Modeling Chlorine Residuals in Drinking‐Water Distribution Systems
Publisher: American Society of Civil Engineers
Abstract: A mass‐transfer‐based model is developed for predicting chlorine decay in drinking‐water distribution networks. The model considers first‐order reactions of chlorine to occur both in the bulk flow and at the pipe wall. The ...
Modeling Disinfectant Residuals in Drinking-Water Storage Tanks
Publisher: American Society of Civil Engineers
Abstract: The factors leading to the loss of disinfectant residual in well-mixed drinking-water storage tanks are studied. Equations relating disinfectant residual to the disinfectant's reaction rate, the tank volume, and the fill ...
Discrete Volume‐Element Method for Network Water‐Quality Models
Publisher: American Society of Civil Engineers
Abstract: An explicit dynamic water‐quality modeling algorithm is developed for tracking dissolved substances in water‐distribution networks. The algorithm is based on a mass‐balance relation within pipes that considers both advective ...