Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Optimal management of coastal aquifers using heuristic algorithms
Download
index.pdf
Date
2011
Author
Demirbaş, Korkut
Metadata
Show full item record
Item Usage Stats
180
views
93
downloads
Cite This
Excessive pumping in coastal aquifers results in seawater intrusion where optimal and efficient planning is essential. In this study, numerical solution of single potential solution by Strack is combined with genetic algorithm (GA) to find the maximum extraction amount in a coastal aquifer. Seawater intrusion is tracked with the potential value at the extraction well locations. A code is developed by combining GA and a subroutine repeatedly calling MODFLOW as a numerical solver to calculate the potential distribution for different configurations of solution (trial solutions). Potential distributions are used to evaluate the fitness values for GA. The developed model is applied to a previous work by Mantoglou. Another heuristic method, simulated annealing (SA) is utilized to compare the results of GA. Different seawater prevention methods (i.e. injection wells, canals) and decision variables related to those methods (i.e. location of the injection wells or canals) are added to model to further prevent the seawater intrusion and improve the coastal aquifer benefit. A method called “Alternating Constraints Method” is introduced to improve the solution for the cases with variable location. The results show that both proposed method and the regular solution with GA or SA prove to be successful methods for the optimal management of coastal aquifers.
Subject Keywords
Hydrogeology.
,
Aquifers.
URI
http://etd.lib.metu.edu.tr/upload/12613135/index.pdf
https://hdl.handle.net/11511/21138
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Combined simulation-optimization of a coastal aquifer by using Genetic Algorithm
Demirbaş, Kerim; Altan Sakarya, Ayşe Burcu; Onder, H. (2010-06-25)
Excessive pumping in coastal aquifers results in seawater intrusion where optimal and efficient planning is essential. In this study, numerical solution of single potential solution by Strack (1976) is combined with Genetic Algorithm (GA) to optimize the maximum benefit in a coastal aquifer. Injection wells are added as an artificial recharge to prevent seawater intrusion. The objective is to optimize both pumping rates and locations of injection wells. The model is applied to a previous work by Mantoglou (...
Optimal management of a coastal aquifer in southern Turkey
HALLAJI, Khosrow; Yazıcıgil, Hasan (1996-01-01)
Seven ground-water management models were developed to determine the optimal planning and operating policies of a costal aquifer in southern Turkey threatened by saltwater intrusion. Steady-state and transient finite-element simulation models, representing the response of the system, are linked to linear and quadratic optimization models using response functions. Optimal pumpage policies were determined for 94 wells under three management objectives that maximized agricultural water withdrawals and minimize...
Adaptation measures for seawalls to withstand sea-level rise
Kisacik, Dogan; Özyurt Tarakcıoğlu, Gülizar; Cappietti, Lorenzo (2022-04-15)
© 2022 Elsevier LtdSea level rise necessitates adaptation measures for coastal protection structures like seawalls as changes in the design conditions will generate higher wave overtopping discharges and coastal flooding. Although increasing crest height is a common measure, the recreational function of urban seawalls limits the applicability. In this paper, performance on overtopping control of crest modifications such as storm walls, parapets, promenade, and stilling wave basin (SWB), are studied for simp...
Optimal sizing of storage tanks in domestic rainwater harvesting systems: A linear programming approach
Okoye, Chiemeka Onyeka; Solyali, Oguz; Akintug, Bertug (2015-11-01)
This paper proposes an optimization model to determine the optimal tank size of a single residential housing unit for rainwater harvesting and storage. Taking into account the site specific data such as the rainfall profile, the roof area of the building, the water consumption per capita and the number of residents, an integrated optimization model based on linear programming is proposed to decide on the size of rainwater storage tank to build such that the net present value of the total tank construction c...
Numerical reservoir simulation of Alaşehir geothermal field
Aydın, Hakkı; Akın, Serhat (null; 2020-02-10)
Use of a comprehensive reservoir simulation is essential for an effective geothermal reservoir management. TOUGH2 has become a widely used simulator for this purpose. In this study, one of the most exploited geothermal fields in Turkey, Alaşehir geothermal field has been modeled by using TOUGH2 reservoir simulator. The study includes more than 100 wells, which are operated by 7 different developers. The total installed capacity of geothermal power plants in the field is 212 MWe, but additional capacity (98 ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
K. Demirbaş, “Optimal management of coastal aquifers using heuristic algorithms,” Ph.D. - Doctoral Program, Middle East Technical University, 2011.
