Messy Genetic Algorithms For Optimisation Of Water Distribution Systems Including Water Hammer

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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.

Messy Genetic Algorithms For Optimisation Of Water Distribution Systems

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Author : Zheng Yi Wu
language : en
Publisher:
Release Date : 1996

Messy Genetic Algorithms For Optimisation Of Water Distribution Systems written by Zheng Yi Wu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Irrigation categories.

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.

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.

Real Coded Genetic Algorithm Parameter Setting For Water Distribution System Optimisation

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Author : Matthew S. Gibbs
language : en
Publisher:
Release Date : 2008

Real Coded Genetic Algorithm Parameter Setting For Water Distribution System Optimisation written by Matthew S. Gibbs and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Genetic algorithms categories.

"The management of Water Distribution Systems (WDSs) involves making decisions about various operations in the network, including the scheduling of pump operations and setting of disinfectant dosing rates. Optimisation methods known as Genetic Algorithms (GAs) have been successfully adopted to assist in determining the best possible solutions to WDS optimisation problems for a number of years. The result from the work undertaken in this thesis is a complete GA calibration methodology. Two methodologies are proposed and evaluated in this thesis, one that considers the selection pressure based on the characteristics of the fitness function, and another that is derived from the time to convergence based on genetic drift, and therefore does not require any information about the fitness function characteristics. The proposed methodologies have been compared against other GA calibration methodologies that have been proposed, as well as typical parameter values to determine the most suitable method to determine the GA parameter values. The comparison of the different calibration approaches demonstrates three main results: 1. that the proposed methodology produced the best results out of the different GA calibration methods compared; 2. that the proposed methodology can be applied in practice; and 3. that a correctly calibrated GA is very beneficial when solutions are required in a limited timeframe." -- From abstract.

Fluid Transients And Pipeline Optimization Using Genetic Algorithms

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Author : Zhiqiang Zhang
language : en
Publisher:
Release Date : 1999

Fluid Transients And Pipeline Optimization Using Genetic Algorithms written by Zhiqiang Zhang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.

Millions of dollars are spent each year on water distribution systems. Pipe optimization techniques provide an opportunity for potential savings in costs for water supply systems. These optimization techniques include linear programming, non-linear programming, dynamic programming, enumerative approaches, and genetic algorithms. The former four techniques have been applied to pipe network optimization in the research literature over the last 20 years or so. Genetic algorithms provide a new approach to pipe network optimization. Details of this method are considered in this thesis. A global cost analysis of each component in a water supply system is carried out of the genetic algorithm in order to assess the form of the objective function. Traditionally, the analysis an pipeline systems has focused on the steady state. In the current work, a genetic algorithm optimization model, which uses a probabilistic search procedure that emulates Darwinian natural selection, is coupled with a transient hydraulic simulation model to generate and evaluate trial pipe network designs in search of an optimal solution. A new and powerful penalty function is also developed for pressure violations distinguishing steady state and transient conditions. The genetic algorithm search is applied to a case study which demonstrates its flexibility and the opportunity for significant cost saving offered by this method.

Optimization Of Municipal Water Supply Systems Using The Genetic Algorithm

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Author : Elizabeth Stuart Gibson
language : en
Publisher:
Release Date : 1994

Optimization Of Municipal Water Supply Systems Using The Genetic Algorithm written by Elizabeth Stuart Gibson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Drinking water categories.

Storage And Pumping System Optimization Using Genetic Algorithms

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Author : Tobias A. Bloch
language : en
Publisher:
Release Date : 1998

Storage And Pumping System Optimization Using Genetic Algorithms written by Tobias A. Bloch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.

Water distributions systems generally do not operate at or their optimal points. The operational procedures of these systems should be reworked to make them more economically efficient. The ability to optimize (i.e., for economic efficiency) the operation of water distribution systems is hindered by the dimensionally (i.e., many different subsystems to optimize simultaneously) inherent in these systems. This is especially true for small time steps, pumping systems utilizing multiple pumps and distribution networks with multiple storage tanks. A branch of computer science called Genetic Algorithms has been shown to be very effective for optimizing complex systems. Genetic Algorithms are utilized in Two computer programs developed in this thesis. These programs were tested against simple water distribution systems and produced optimal solutions in a very short period of time. The architecture (i.e., program structure) for future computer programs that are based on the platform created in this thesis is also presented. These proposed versions should be useful in the optimization of large water distribution systems, something which has never been possible before.

The Optimal Design And Control Of Water Distribution Systems Using Genetic Algorithms

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Author : Mohammed Elgorani A. Ali
language : en
Publisher:
Release Date : 2001

The Optimal Design And Control Of Water Distribution Systems Using Genetic Algorithms written by Mohammed Elgorani A. Ali and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.

A Genetic Algorithm Search For The Optimal Design Of Water Distribution Systems

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Author : L. J. Murphy
language : en
Publisher:
Release Date : 1997

A Genetic Algorithm Search For The Optimal Design Of Water Distribution Systems written by L. J. Murphy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.