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Koken Mete - One of the best experts on this subject based on the ideXlab platform.

  • Experimental Investigation of the Anti-Vortex Devices of Beyhan 1 Dam and Hydroelectric Power Plant Water Intake Structure
    The Author(s). Published by Elsevier Ltd., 2016
    Co-Authors: Gogus Mustafa, Altan-sakarya A. Burcu, Koken Mete
    Abstract:

    AbstractHydraulic model tests of the Intake Structure of Beyhan 1 Dam having four units were carried out at Hydromechanics Laboratory of Middle East Technical University, Ankara. In order to investigate the flow pattern, and formation, development and dissipation of vortices at the Intake Structure under different operation conditions of the units, and to determine the types of anti-vortex devices to avoid the air-entraining vortices, a model of 1/29.43 length scale was constructed. The model area covers an about 200 m × 300 m section of the Beyhan 1 reservoir, the Intake Structure having four units, the trash racks and penstocks.Experiments were carried out at various reservoir water levels with specified unit operation discharges for various unit operation conditions. From the observations and experimental results, it was concluded that air-entraining vortices were forming at the Intakes when the reservoir water level was minimum, RWL=977.0 m. Flow separation zones were forming; along the inner lengths of the side walls surrounding the Intake Structure and behind the trashrack piers at any RWL tested. In order to reduce the strengths of the vortices forming and to prevent the Intakes from air-entraining vortices, in the first phase of the experimental study, several anti-vortex devices; continuous plates constructed on top of the Intakes, continuous projected head walls and continuous projected head walls with vertical unit-separation walls were tested under various flow and unit operation conditions to find the anti-vortex device that gave the best performance. It was also stated that the arrangements to be made on the geometries of the side walls and trashrack piers, if possible, will improve the flow conditions at the Intakes

  • Experimental Investigation of the Anti Vortex Devices of Beyhan 1 Dam and Hydroelectric Power Plant Water Intake Structure
    'Elsevier BV', 2016
    Co-Authors: Gogus Mustafa, Altan Sakarya, Ayşe Burcu, Koken Mete
    Abstract:

    Hydraulic model tests of the Intake Structure of Beyhan 1 Dam having four units were carried out at Hydromechanics Laboratory of Middle East Technical University, Ankara In order to investigate the flow pattern, and formation, development and dissipation of vortices at the Intake Structure under different operation conditions of the units, and to determine the types of anti-vortex devices to avoid the air-entraining vortices, a model of 1/29.43 length scale was constructed. The model area covers an about 200 m x 300 m section of the Beyhan 1 reservoir, the Intake Structure having four units, the trash racks and penstocks. Experiments were carried out at various reservoir water levels with specified unit operation discharges for various unit operation conditions. From the observations and experimental results, it was concluded that air-entraining vortices were forming at the Intakes when the reservoir water level was minimum, RWL=977.0 m. Flow separation zones were forming; along the inner lengths of the side walls surrounding the Intake Structure and behind the trashrack piers at any RWL tested. In order to reduce the strengths of the vortices forming and to prevent the Intakes from air-entraining vortices, in the first phase of the experimental study, several anti vortex devices; continuous plates constructed on top of the Intakes, continuous projected head walls and continuous projected head walls with vertical unit-separation walls were tested under various flow and unit operation conditions to find the anti-vortex device that gave the best performance. It was also stated that the arrangements to be made on the geometries of the side walls and trashrack piers, if possible, will improve the flow conditions at the Intakes. (C) 2016 The Authors. Published by Elsevier Ltd

Gogus Mustafa - One of the best experts on this subject based on the ideXlab platform.

  • Experimental Investigation of the Anti-Vortex Devices of Beyhan 1 Dam and Hydroelectric Power Plant Water Intake Structure
    The Author(s). Published by Elsevier Ltd., 2016
    Co-Authors: Gogus Mustafa, Altan-sakarya A. Burcu, Koken Mete
    Abstract:

    AbstractHydraulic model tests of the Intake Structure of Beyhan 1 Dam having four units were carried out at Hydromechanics Laboratory of Middle East Technical University, Ankara. In order to investigate the flow pattern, and formation, development and dissipation of vortices at the Intake Structure under different operation conditions of the units, and to determine the types of anti-vortex devices to avoid the air-entraining vortices, a model of 1/29.43 length scale was constructed. The model area covers an about 200 m × 300 m section of the Beyhan 1 reservoir, the Intake Structure having four units, the trash racks and penstocks.Experiments were carried out at various reservoir water levels with specified unit operation discharges for various unit operation conditions. From the observations and experimental results, it was concluded that air-entraining vortices were forming at the Intakes when the reservoir water level was minimum, RWL=977.0 m. Flow separation zones were forming; along the inner lengths of the side walls surrounding the Intake Structure and behind the trashrack piers at any RWL tested. In order to reduce the strengths of the vortices forming and to prevent the Intakes from air-entraining vortices, in the first phase of the experimental study, several anti-vortex devices; continuous plates constructed on top of the Intakes, continuous projected head walls and continuous projected head walls with vertical unit-separation walls were tested under various flow and unit operation conditions to find the anti-vortex device that gave the best performance. It was also stated that the arrangements to be made on the geometries of the side walls and trashrack piers, if possible, will improve the flow conditions at the Intakes

  • Experimental Investigation of the Anti Vortex Devices of Beyhan 1 Dam and Hydroelectric Power Plant Water Intake Structure
    'Elsevier BV', 2016
    Co-Authors: Gogus Mustafa, Altan Sakarya, Ayşe Burcu, Koken Mete
    Abstract:

    Hydraulic model tests of the Intake Structure of Beyhan 1 Dam having four units were carried out at Hydromechanics Laboratory of Middle East Technical University, Ankara In order to investigate the flow pattern, and formation, development and dissipation of vortices at the Intake Structure under different operation conditions of the units, and to determine the types of anti-vortex devices to avoid the air-entraining vortices, a model of 1/29.43 length scale was constructed. The model area covers an about 200 m x 300 m section of the Beyhan 1 reservoir, the Intake Structure having four units, the trash racks and penstocks. Experiments were carried out at various reservoir water levels with specified unit operation discharges for various unit operation conditions. From the observations and experimental results, it was concluded that air-entraining vortices were forming at the Intakes when the reservoir water level was minimum, RWL=977.0 m. Flow separation zones were forming; along the inner lengths of the side walls surrounding the Intake Structure and behind the trashrack piers at any RWL tested. In order to reduce the strengths of the vortices forming and to prevent the Intakes from air-entraining vortices, in the first phase of the experimental study, several anti vortex devices; continuous plates constructed on top of the Intakes, continuous projected head walls and continuous projected head walls with vertical unit-separation walls were tested under various flow and unit operation conditions to find the anti-vortex device that gave the best performance. It was also stated that the arrangements to be made on the geometries of the side walls and trashrack piers, if possible, will improve the flow conditions at the Intakes. (C) 2016 The Authors. Published by Elsevier Ltd

Bojan Srdjevic - One of the best experts on this subject based on the ideXlab platform.

  • identifying the criteria set for multicriteria decision making based on swot pestle analysis a case study of reconstructing a water Intake Structure
    Water Resources Management, 2012
    Co-Authors: Zorica Srdjevic, Ratko Bajcetic, Bojan Srdjevic
    Abstract:

    This paper proposes an approach for defining the criteria set required for multicriteria decision making. An approach is developed for a specific class of water management problems, and a SWOT/PESTLE analysis is recommended for identifying the internal and external factors that influence a given water system. The factors are grouped into six categories: political, economic/financial, social, technical, legal, and environmental (PESTLE), and separated afterwards according to their positive or negative influence on the system. All factors are filtered by a proposed elimination algorithm to identify the non-inferior factors and declare them as candidates for inclusion into the criteria set. An approach is applied to the real-life problem of how to define the criteria set and enable the selection of the optimal reconstruction solution of a water Intake Structure within a regional hydro-system in Vojvodina Province, Serbia. To verify the developed approach, an independent expert is invited to asses all factors identified by the SWOT/PESTLE analysis using the analytic hierarchy process (AHP) and to rank factors by order of preference. The outcome is satisfactory because the seven top-ranked factors from AHP completely matched the list of factors derived from the elimination algorithm.

Grenko Oja - One of the best experts on this subject based on the ideXlab platform.

  • Hydroelectric powerplant Intake Structure numerical analysis
    University of Rijeka. Faculty of Engineering. Department of fluid mechanics and computational engineering. Section of Fluid Mechanics and Hydraulic En, 2019
    Co-Authors: Grenko Oja
    Abstract:

    U radu se analizira dovodni sustav hidropostrojenja, njegove karakteristike i varijacije izvedbe. Budući da je hidroenergija značajniji i jedan od najstarijih izvora obnovljive i „čiste“ energije, iskorištavanje vodne energije se znatno razvilo od početaka do danas i stoga postoji široki spektar različitosti izvedbe u odnosu na potrebe postrojenja, vrstu postrojenja i geografske okolnosti. Detaljno se opisuje svaki od dijelova dovodnog sustava, njihova funkcija i način rada. Ovaj rad se prvenstveno bavi akumulacijskim hidroelektranama, njihovim dovodnim sustavima i analizom strujanja kroz iste. Nastavak završnog rada usmjeren je na numeričke modele kojima se opisuju strujanja i prijelazne pojave u cjevovodu. Od prijelaznih pojava u cjevovodima najznačajniji je hidraulički udar koji može uzrokovati velike negativne posljedice u hidropostrojenju i njegovoj okolnosti. U radu se opisuje numerički model idealnog hidrauličkog udara i opisuju se načini na koje se jednostavan model može proširiti. Opisane su jednadžba nestacionarnog strujanja - jednadžba kontinuiteta i jednadžba količine gibanja. Ostatak rada bavi se kreiranjem numeričkog modela hidrauličkog udara nastalog pri zatvaranju zasuna u crpnoj hidroelektrani „Fužine“. Simulacija je napravljena u komercijalnim programima AFT Fathom i AFT Impulse. Usporedbom dobivenih rezultata s vrijednostima mjerenim u samom dovodnom sustavu CHE „Fužine“ zaključuje se zadovoljavajuća kvaliteta prikazivanja stvarnosti izrađenog numeričkog modela.This paper analyzes the hydro power plant supply system, it's characteristics and variations of implementation. Being that hydropower is one of the most important and oldest sources of clean and renewable energy, the usage of water energy has considerably evolved since it's beginnings till today and hence there is a wide spectrum of different supply system types considering the plant's needs, type, and geographical situation. Power plant supply system elements are described in detail, as well as their function within the system and method of operation. This paper pimarily focuses on hydro accumulation power plants, their supply systems and flow analysis through the system. The continuation of this paper focuses on numerical models which describe fluid flow and hydraulic transients in the conduit. Water hammer is the most significant of hydraulic transients since it can cause great negative consequences within the power plant and in it's vicinity. Basic water hammer equations are derived and wave propagation is explained in detail. This paper also describes the transient flow equations. The rest of the paper is focused on creating a numerical model of water hammer in hydro power plant „Fužine“, which occurs while closing the shutter in the supply system. The simulation is made using the commercial computer programs AFT Fathom and AFT Impulse. The comparison of the numerical model with the data measured on site concludes that the quality of the numerical model is sastisfying

Mukhammadiev M.m. - One of the best experts on this subject based on the ideXlab platform.

  • A NEW TECHNICAL SOLUTION FOR CLEANING THE WATER Intake Structure OF PUMPING STATIONS FROM SILTATION AND ITS EXPERIMENTAL RESEARCH
    2030 Uzbekistan Research Online, 2020
    Co-Authors: Mukhammadiev M.m.
    Abstract:

    The article considers one of the most pressing problems of pumping stations in the irrigation system today, their blurring of the bottom of the water Intake (avancamera and water Intake chambers), analyzes the existing proposals, designs and technical solutions and their advantages and disadvantages. Given the above advantages and disadvantages, a new design has been proposed for the treatment of water Intake Structures from turbid sediments with minimal energy and capital expenditures, very cheap and simple to operate and reliable. The design includes a turbid suction pump and a turbid pump, as well as a pulp pipeline. The pressurized water flow required for the hydraulic pump and turbid pumping device is taken from the pressure pipe of the pump station. The energy of the water flow to the hydraulic pump under pressure creates a pressure that is much greater than the pressure in the flow chamber, which ensures that the sludge is absorbed and expelled through the pipeline, and laboratory studies were conducted to evaluate its performance. therefore (because the error was less than 10%) the variances were found to be acceptable as reversible, and the laboratory results were found to be fully consistent with the Cochrane and Fisher criteria