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Three‐Dimensional Optimization of Urban Drainage Systems
Author(s) -
Diogo A. Freire,
Walters Godfrey A.,
Ribeiro de Sousa E.,
Graveto Victor M.
Publication year - 2000
Publication title -
computer‐aided civil and infrastructure engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.773
H-Index - 82
eISSN - 1467-8667
pISSN - 1093-9687
DOI - 10.1111/0885-9507.00204
Subject(s) - simulated annealing , stormwater , mathematical optimization , computer science , drainage , sanitary sewer , convergence (economics) , dimension (graph theory) , transformation (genetics) , genetic programming , civil engineering , engineering , surface runoff , mathematics , environmental engineering , artificial intelligence , ecology , biochemistry , chemistry , gene , pure mathematics , economics , biology , economic growth
A global mathematical model for simultaneously obtaining the optimal layout and design of urban drainage systems for foul sewage and stormwater is presented. The model can handle every kind of network, including parallel storm and foul sewers. It selects the optimal location for pumping systems and outfalls or wastewater treatment plants (defining the natural and artificial drainage basins), and it allows the presence of special structures and existing subsystems for optimal remodeling or expansion. It is possible to identify two basic optimization levels: in the first level, the generation and transformation of general layouts (consisting of forests of trees) until a convergence criterion is reached, and in the second level, the design and evaluation of each forest. The global strategy adopted combines and develops a sequence of optimal design and plan layout subproblems. Dynamic programming is used as a very powerful technique, alongside simulated annealing and genetic algorithms, in this discrete combinatorial optimization problem of huge dimension.