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Numerical simulation of the flow rectification measures in the forebay of the pumping station
ID Arifjanov, Aybek (Author), ID Sattorov, Alimardon (Author), ID Madaliev, Murodil (Author), ID Abdulkhaev, Zokhidjon (Author), ID Madrakhimov, Mamadali (Author)

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Abstract
The kinematics of flow movement in the forebays of pumping stations significantly influence the efficiency of pump operation. This study addresses the issue of sediment accumulation caused by improper flow velocity distribution in the intake structures of pumping stations. Research was conducted at the water intake structure of Uzbekistan’s Dehqonobod pumping station, located in Quva district, Fergana region. The study involved analyzing hydrodynamic processes within the intake structure based on the principles of fluid motion, combining experimental approaches with simulations using the COMSOL Multiphysics software suite to develop a 3D structural model of the prototype intake structure. Additionally, numerical simulations were performed using the Newton-Raphson scheme and the realizable k-ε turbulence model for comparative analysis and evaluation. To ensure proper flow velocity distribution, six vertical columns were arranged in a triangular pattern relative to the flow movement, with a spacing of 1 meter between them. This arrangement was proposed so as to enhance technical and economic efficiency. The results of the study demonstrated that the installation of vertical columns increased the flow velocity near the right and left walls of the forebay, achieving a variation in velocity distribution of up to 20%. Specific recommendations were developed to optimize the hydrodynamic conditions and improve the pumping station's operational efficiency.

Language:English
Keywords:vzorec pretoka, pretočna hitrost, stebri za uravnavanje pretoka, k-ε model, model volumna tekočine, rektifikacijska shema, Navier-Stokesove enačbe
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publication status:Published
Publication version:Version of Record
Year:2025
Number of pages:Str. 1-14
Numbering:Vol. 38, no. 68
PID:20.500.12556/RUL-169119 This link opens in a new window
UDC:532.5:627(047.31)(575.1)
ISSN on article:0352-3551
DOI:10.15292/acta.hydro.2025.01 This link opens in a new window
COBISS.SI-ID:235669251 This link opens in a new window
Publication date in RUL:13.05.2025
Views:341
Downloads:93
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Record is a part of a journal

Title:Acta hydrotechnica
Publisher:Fakulteta za gradbeništvo in geodezijo
ISSN:0352-3551
COBISS.SI-ID:3664386 This link opens in a new window

Licences

License:CC BY-SA 4.0, Creative Commons Attribution-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-sa/4.0/
Description:This Creative Commons license is very similar to the regular Attribution license, but requires the release of all derivative works under this same license.

Secondary language

Language:Slovenian
Title:Numerične simulacije ukrepov za uravnavanje pretoka v vtočnem bazenu črpališča
Abstract:
Gibanje toka v vtočnih bazenih črpališč pomembno vpliva na učinkovitost delovanja črpalk. Študija obravnava vprašanje kopičenja plavin, ki ga povzroča neustrezna porazdelitev pretočnih hitrosti v zajemnih objektih črpališč. Raziskave so bile izvedene na vtoku v črpališče Dehqonobod v okrožju Quva v regiji Fergana, Uzbekistan. Študija je vključevala analizo hidrodinamičnih procesov znotraj zajemnega objekta na podlagi principov gibanja tekočin, pri čemer smo eksperimentalne pristope kombinirali s simulacijami z uporabo programske opreme COMSOL Multiphysics za razvoj 3D strukturnega modela prototipnega zajemnega objekta. Poleg tega so bile za primerjalno analizo in oceno izvedene numerične simulacije z uporabo Newton-Raphsonove sheme in realizacijski k-ε turbulentni model. Da bi zagotovili pravilno porazdelitev pretočnih hitrosti, je bilo šest navpičnih stebrov razporejenih v trikotnem vzorcu glede na gibanje toka, razdalja med njimi je bila 1 meter. Ta ureditev je bila predlagana za povečanje tehnične in ekonomske učinkovitosti. Rezultati študije so pokazali, da je namestitev navpičnih stebrov povečala hitrost toka v bližini desne in leve stene vtočnega bazena in dosegla do 20-odstotno spremembo v porazdelitvi hitrosti. Pripravljena so bila posebna priporočila za optimizacijo hidrodinamičnih pogojev in izboljšanje obratovalne učinkovitosti črpališča.

Keywords:flow pattern, flow velocity, flow regulating columns, k-ε model, finite volume model, rectification scheme, Navier–Stokes equations

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