Optimisation Of Water Distribution Systems Using Genetic Algorithms For Hydraulic And Water Quality Issues
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Optimisation Of Water Distribution Systems Using Genetic Algorithms For Hydraulic And Water Quality Issues
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Author : Christopher Michael Hewitson
language : en
Publisher:
Release Date : 1999
Optimisation Of Water Distribution Systems Using Genetic Algorithms For Hydraulic And Water Quality Issues written by Christopher Michael Hewitson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Hydraulics categories.
Develops a framework balancing water quality costs resulting from waterborne disease, disinfection by-product exposure and aesthetic concerns, against hydraulic costs, which include pipes, pumps and tanks. The genetic algorithms developed, successfully obtained the current optimal hydraulic solution, before adapting the model to incorporate water quality issues.
Advances In Water Distribution Networks
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Author : Giuseppe Pezzinga
language : en
Publisher: MDPI
Release Date : 2019-02-28
Advances In Water Distribution Networks written by Giuseppe Pezzinga and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-28 with Technology & Engineering categories.
The Special Issue on Advances in Water Distribution Networks (WDNs) explores four important topics of research in the framework of WDNs, namely simulation and optimization modelling, topology and partitioning, water quality, and service effectiveness. With regard to the first topic, the following aspects are addressed: pressure-driven formulations, algorithms for the optimal location of control valves to minimize leakage, the benefits of water discharge prediction for the remote real time control of valves, and transients generated by pumps operating as turbines. In the context of the second topic, a topological taxonomy of WDNs is presented, and partitioning methods for the creation of district metered areas are compared. In relation to the third topic, the vulnerability to trihalomethane is assessed, and a statistical optimization model to minimize heavy metal releases is presented. Finally, the fourth topic focusses on the estimation of non-revenue water, including leakage and unauthorized consumption, and on the assessment of service under intermittent supply conditions.
Head Dependent Modelling And Optimisation Of Water Distribution Systems
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Author : Alemtsehay Gebremeskel Seyoum
language : en
Publisher:
Release Date : 2015
Head Dependent Modelling And Optimisation Of Water Distribution Systems written by Alemtsehay Gebremeskel Seyoum and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
The construction, operation and maintenance of water distribution systems (WDSs) involve a huge capital investment and it is essential to design and manage them in a cost effective way. The optimisation approaches (e.g. evolutionary algorithms) for optimal design or operation of WDSs require simulation models to evaluate the hydraulic and/or water quality performances of solutions to the problem. An accurate performance assessment of solutions (feasible and infeasible) is crucial to guide the search towards the optimal solution efficiently. Conventional models are demand-driven and consequently they are incapable of simulating pressure-deficient (infeasible) solutions accurately. When simulating a pressure-deficient network, results produced by demand-driven analysis model are highly unreliable and misleading. This thesis is concerned with the development and application of a new integrated head-dependent hydraulic and water quality model for pressure-deficient network modelling and optimisation of real-world systems. The original and novel aspects of the work carried out in this research are stated next. A new pressure dependent analysis (PDA) model has been developed for pressure-deficient network modelling. The model is an enhanced 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 computational properties for highly pressure-deficient networks; and increases the algorithm's consistency over a wider range of operating conditions. The model performed consistently well when simulating hypothetical and real-life networks under normal and pressure deficient conditions. Comparison between results generated by the new model and the original EPANET-PDX demonstrated that the two models produce identical hydraulic results. From a numerical perspective, a significant reduction in numbers of iterations to complete a simulation has been obtained for all pressure operating conditions. Also, for extremely pressure deficient conditions a significant reduction in computational time has been achieved in comparison to the original EPANET-PDX. Water quality modelling under pressure-deficient conditions is addressed for the first time in this thesis. Hydraulic and water quality analyses based on two water supply zones in the UK were conducted for a range of simulated operating conditions including normal and subnormal pressure and pipe closures using PDA. It is shown that operating conditions with subnormal pressures, if severe and protracted, can lead to spatial and temporal distributions of the water age and concentrations of chlorine and disinfection by-products that are significantly different from operating conditions in which the pressure is satisfactory .A new parallel model for the solution of multi-objective WDSs optimisation problems is developed. The model utilises a multi-objective genetic algorithm that has an embedded PDA hydraulic simulator. The PDA takes into account the pressure dependency of the nodal flows and thus avoids the need for penalties to address violations of the nodal pressure constraints. A controller-worker approach is implemented to parallelise the optimisation process in which a single controller processor executes the routine operation of the algorithm and employs the workers to carry out fitness evaluation. A real-life network that comprises multiple sources, multiple demand categories, many fire flows and extended period simulation is used to demonstrate the effectiveness of the model. Results show that the algorithm is stable and finds optimal and near-optimal solutions reliably and efficiently.
Improving Efficiency And Reliability In Water Distribution Systems
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Author : Enrique Cabrera
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-14
Improving Efficiency And Reliability In Water Distribution Systems written by Enrique Cabrera and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-14 with Science categories.
This book contains the lectures given in the International Course "Improving efficiency and reliability in water supply systems", hosted and sponsored by the Menendez Pelayo International University (U.I.M.P.) and co-sponsored by Aguas de Valencia, the British Council and the EC Cornett and Erasmus programmes. The short course took place in Valencia (Spain) in November 1994, with an attendance of more than one hundred delegates. We must not only acknowedge and thank Dr. Joaquin Azagra, as UIMP Director, but also his collaborators D. Luis Moreno and Lidia Lopez for their support in the preparation of the Course and during the course taking place. UIMP sponsorship allowed us to assemble in Valencia an eminent cadre of lecturers coming from all over the world, that covered in an ordered and precise fashion some of the more relevant aspects on efficiency and reliability in water supply systems. We are very thankful to all these leading lecturers for their invaluable cooperation. The publication of this book and the Spanish edition as well, have been made possible thanks to the sponsorship of both Polytechnic University of Valencia througout its Chancellor, Justo Nieto, and Aguas de Valencia throughout its General Director Alvaro Aguirre. We must also thank Kluwer Academic Publishers and especially their Publisher Petra van Steenbergen for her assistance, careful presentation and production of the book.
Advanced Hydroinformatic Techniques For The Simulation And Analysis Of Water Supply And Distribution Systems
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Author : Manuel Herrera
language : en
Publisher: MDPI
Release Date : 2018-07-19
Advanced Hydroinformatic Techniques For The Simulation And Analysis Of Water Supply And Distribution Systems written by Manuel Herrera and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-19 with Electronic books categories.
This book is a printed edition of the Special Issue "Advanced Hydroinformatic Techniques for the Simulation and Analysis of Water Supply and Distribution Systems" that was published in Water
Messy Genetic Algorithms For Optimisation Of Water Distribution Systems Including Water Hammer
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Author : Zhengyi Wu (Ph. D.)
language : en
Publisher:
Release Date : 1998
Messy Genetic Algorithms For Optimisation Of Water Distribution Systems Including Water Hammer written by Zhengyi Wu (Ph. D.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Irrigation categories.
A methodology for comprehensive optimisation of pipe diameters, pipe classes and surge tanks of the water distribution systems has been developed by carefully integrating the steady state hydraulic solver, the water hammer simulation model, the fast messay GA and the boundary search strategy.
Optimization Of Water Distribution Networks Using Genetic Algorithm
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Author : Gerçek Güç
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2011-10
Optimization Of Water Distribution Networks Using Genetic Algorithm written by Gerçek Güç and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-10 with categories.
This study gives a description about the development of a computer model, RealPipe, which relates genetic algorithm (GA) to the well known problem of least-cost design of water distribution network. GA methodology is an evolutionary process, basically imitating evolution process of nature. GA is essentially an efficient search method basically for nonlinear optimization cases. The genetic operations take place within the population of chromosomes. By means of various operators, the genetic knowledge in chromosomes change continuously and the success of the population progressively increases as a result of these operations. GA optimization is also well suited for optimization of water distribution systems, especially large and complex systems. The primary objective of this study is optimization of a water distribution network by GA. GA operations are realized on a special program developed by the author called RealPipe. RealPipe optimizes given water network distribution systems by considering capital cost of pipes only.
Water Industry Systems
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Author : Dragan Savic
language : en
Publisher:
Release Date : 1999
Water Industry Systems written by Dragan Savic and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Technology & Engineering categories.
These conference proceedings reflect the current and future roles of modeling and optimization in the description and management of water industry systems. Balanced views of academic and industry experts from around the world are included in the two volumes of papers. Insights are provided into the experiences of leading researchers and practitioners in applying modelling and optimization to the management of water quantity and quality. The topics covered are: advanced modelling techniques, risk management, process control and optimization, with particular emphasis on the development and implementation of emerging technologies. Application areas include both water supply and waste water disposal.
Introduction To Optimization Analysis In Hydrosystem Engineering
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Author : Ehsan Goodarzi
language : en
Publisher: Springer Science & Business Media
Release Date : 2014-02-06
Introduction To Optimization Analysis In Hydrosystem Engineering written by Ehsan Goodarzi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-02-06 with Technology & Engineering categories.
This book presents the basics of linear and nonlinear optimization analysis for both single and multi-objective problems in hydrosystem engineering. The book includes several examples with various levels of complexity in different fields of water resources engineering. The examples are solved step by step to assist the reader and to make it easier to understand the concepts. In addition, the latest tools and methods are presented to help students, researchers, engineers and water managers to properly conceptualize and formulate resource allocation problems, and to deal with the complexity of constraints in water demand and available supplies in an appropriate way.
Computing And Control For The Water Industry
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Author : Roger Powell
language : en
Publisher:
Release Date : 1999
Computing And Control For The Water Industry written by Roger Powell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Business & Economics categories.
Computing and Control for the Water Industry, written by experts in the research and industrial communities, describes the latest in techniques and methodologies for computer modelling, monitoring and control of water distribution systems, canals and reservoirs.