Yazıcıgil, Hasan
An optimization model that may be used by reservoir system operators to improve daily, real‐time operations and to evolve better long‐term operating guidelines is developed and tested. The four multipurpose reservoirs in the Green River Basin (GRB) of Kentucky are used as a case study. The GRB Operation Optimization Model (GRBOOM) is a linear program constructed to imitate the decision‐ making process that results in actual reservoir release decisions. The model is easily modifiable and very flexible, which allows sensitivity analysis and experimentation with new operating guidelines. This experimentation should permit the operators to evolve improved operating policies. The inputs to the model are data that are readily available, and the outputs may be presented in easily interpreted graphical form.


Multi-Project Multi-Resource Leveling Using Mixed Integer Programming
Altun, Murat; Sönmez, Rifat; Akçamete Güngör, Aslı (2018-11-16)
In construction projects, resource leveling aims to provide efficient resource planning during project implementation by reducing possible fluctuations in resource usage. Decision makers mostly focus on the single project to optimize its resource usage by applying various objective functions of resource leveling problem. However, in real life, multiple projects may be performed in the same time period. Hence, leveling the resources of each project separately generates sub-optimal solutions since interaction...
Alternative solutions for long missing streamflow data for sustainable water resources management
Mesta, Buket; Akgün, Ömer Burak; Kentel Erdoğan, Elçin (Informa UK Limited, 2020-08-01)
Sustainable water resources management requires long time series of streamflow data. In this study, a Takagi-Sugeno fuzzy rule-based (FRB) model is developed to reconstruct long periods of missing daily streamflow data which is a common problem in developing countries. The FRB model uses observations of neighbouring stream gauges, and thus is advantageous regarding data and time requirement compared to physical models. With the proper set of inputs, the FRB model provides better estimates than the hydrologi...
Time variant component and system reliability analysis of bridges
Ghasemnejad Berenji, Vahid; Akgül, Ferhat; Department of Engineering Sciences (2015)
This study aims to develop a time variant reliability algorithm for a bridge component or system capable of incorporating multiple deterioration and live load models to be selected by the user. The algorithm is developed as a shell program built over a previously developed core program (RELSYS) which is based on the First Order Reliability Method (FORM). After reviewing previous research performed on both time invariant and time variant bridge reliability, the fundamental concepts of time variant reliabilit...
Automated calibration of water distribution networks
Apaydın, Öncü; Merzi, Nuri; Department of Civil Engineering (2013)
Water distribution network models are widely used for various purposes such as long-range planning, design, operation and water quality management. Before these models are used for a specific study, they should be calibrated by adjusting model parameters such as pipe roughness values and nodal demands so that models can yield compatible results with site observations (basically, pressure readings). Many methods have been developed to calibrate water distribution networks. In this study, Darwin Calibrator, a...
Optimizing pump schedule and valve characteristics of water distribution networks
Gençoğlu, Gençer; Merzi, Nuri; Department of Civil Engineering (2015)
From design stage to operation, water distribution networks hold the vital part of the infrastructure systems. Pumps contain significant operational consumptions by pumping and maintenance costs. Wise scheduling is an important tool that may decrease these costs. Leakage, defined as a portion of treated and pumped water; and through a typical water distribution network, it may possess a large percentage of the total water supplied. Pressure heads within the water distribution network are one of the major ca...
Citation Formats
H. Yazıcıgil and G. H. TOEBES, “DAILY OPERATION OF A MULTIPURPOSE RESERVOIR SYSTEM,” WATER RESOURCES RESEARCH, pp. 1–13, 1983, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31520.