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Showing 1 to 17 of 17 for “"EPANET"”.
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Comparison and Simulation of a Water Distribution Network in EPANET and a New Generic Graph Trace Analysis Based Model
… Distributed Engineering Workstation (DEW) and EPANET models. These two models are fundamentally different in the approaches taken to simulate hydraulic systems. To better understand the calculations behind each models' hydraulic simulation, three solution methods were evaluated and compared. …
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A penalty-free multi-objective evolutionary optimization approach for the design and rehabilitation of water distribution systems
… seamless, augmented version of the renowned EPANET 2 with pressure dependent analysis (PDA) functionality has been developed. It integrates within the hydraulic engine a continuous nodal pressure-flow function coupled with a line search and backtracking procedure which greatly enhances the …
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Head-dependent modelling and optimisation of water distribution systems
… version of the pressure-dependent extension of EPANET (EPANET-PDX) that has an embedded logistic nodal head-flow function. The novelty of the proposed PDA is the formulation of a new, more efficient and robust implementation of the line search and backtracking procedure that greatly enhances …
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Feasibility of Satellite Water Tanks for Urban Areas in Developing Countries
… system. The proposed system is simulated using EPANET. Leakage is considered in both cases using the orifice function in SWMM and the emitter function in EPANET. Free residual chlorine is used as a surrogate for water quality and chlorine boosters are added to improve water quality in the …
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Evaluating Coliform Monitoring Strategies for Contamination Scenarios in a Distribution System Model
… water utility using simulations within an EPANET computer model of that utility's distribution system. A review of the literature and the use of best professional judgment help to inform the understanding of the primary causes of the occurrence of coliform bacteria in drinking water …
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Modeling and mapping of MaeLa refugee camp water supply
… the development and use of a model, using the EPANET computer code, to simulate the three-hour intermittent MaeLa refugee camp water supply. In coordination with Aide Medicale Internationale, a field survey and pressure, flow and salt tracer testing were conducted as a basis to model the water …
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GIS representation and assessment of water distribution system for Mae La Temporary Shelter, Thailand
… was calculated. ArcGIS was used together with an EPANET water-distribution model created by Rahimi (2008) to evaluate the predicted daily volume of drinking water available per home. Overall this research shows that the vast majority of residents in Mae La have sufficient access to water. Homes …
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Enhanced Pump Schedule Optimization For Large Water Distribution Networks To Maximize Environmental And Economic Benefits
… II is used as the core optimizer algorithm. EPANET toolkit is used as the hydraulic solver of PEPSO. In addition to the EPANET toolkit, a module is developed for training and using an artificial neural network instead of the high fidelity hydraulic model to speed up the optimization process. …
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Dealing With Uncertainty in Engineering and Management Practices
… methodologies used are: Monte Carlo simulation, EPANET simulation, genetic algorithms, Shamir and Howard’s exponential model, threshold break rate model, and two-stage optimization model. Eventually, two universal codes, the hydraulic reliability assessment code and the long-term schedule …
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Analisi sperimentale e modellistica del controllo in tempo reale della pressione ai fini della riduzione delle perdite idriche nelle reti di acquedotto
… semplice modello numerico con il toolkit Matlab/Epanet al fine di simulare gli esperimenti di laboratorio. Il confronto tra i risultati delle simulazioni e degli esperimenti rivela che il modello consente di descrivere correttamente l'evoluzione dei processi di controllo della pressione osservati …
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An Evaluation and Pressure-Driven Design of Potable Water Plumbing Systems
… Hunter-based design methods is presented. EPANET, a commonly used hydraulic modeling software package, is utilized to evaluate network behavior. Example applications are presented to illustrate the robustness of a pressure-driven approach, while also allowing the evaluation of plumbing …
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Realistic modelling of leakage in water distribution pipe networks
… the impact this has on leakage modelling. Epanet is the hydraulic modelling software whose algorithm of the network solver was modified. In addition, a stochastic model for network leak generation and distribution was developed. The conventional and the modified software were applied to …
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Modelling water quality for water distribution systems
… decay coefficient and wall demand (as used in Epanet). Important difficulties in identifying these parameters that come about because of the structure of the models are highlighted. Identified decay coefficients are compared and tested for flow, inlet chlorine and temperature dependence. The …
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The relationship between consumer demand and pressure in a selected pressure managed zone in Cape Town
… two types of models were used, namely 1) Epanet Model (based on the Orifice Equation) and 2) the Epaleaks Model (based on the Modified Orifice Equation). N3 is the coefficient of elasticity. This coefficient represents the relationship between pressure and flow rate. Normal N3 analysis was …
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Uncertainty Analysis and Calibration of Water Distribution Quality Models
… and water quality simulation models using the EPANET toolkit. The methodology is applied on two application networks. The study presents the effect of different field conditions such as the network with or without tanks, altering disinfectant injection policies, changing measurement locations, …
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Evaluation of water quality in urban drinking water distribution networks: a case study in Johannesburg, South Africa
… usefulness of a free and widely used tool (EPANET 2.0) in optimising a network drinking water quality sampling programme. To optimally evaluate the sources of uncertainty two independent models were developed through skeletonisation and reduction. These were the Medium-Level Detail Model – …
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Water Quality Control in Distribution Systems: Bayesian Optimization & Physics-Informed Machine Learning
… with a physics-based WQ simulation model, namely EPANET-MSX (multi-species simulation engine), to determine optimal chlorine injection rates and timing. Using Gaussian Process Regression (GPR) as a surrogate data-driven model, this study systematically investigates the effects of various …