Numerical simulation of the flow rectification measures in the forebay of the pumping station
Numerične simulacije ukrepov za uravnavanje pretoka v vtočnem bazenu črpališča
- Avtorji: Aybek Arifjanov, Alimardon Sattorov, Murodil Madaliyev, Zokhidjon Abdulkhaev, Mamadali Madrakhimov
- Citat: Acta hydrotechnica, vol. 38, no. 68, pp. 1-14, 2025. https://doi.org/10.15292/acta.hydro.2025.01
- Povzetek: 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.
- Ključne besede: Vzorec pretoka, pretočna hitrost, stebri za uravnavanje pretoka, k-ε model, model volumna tekočine, rektifikacijska shema, Navier-Stokesove enačbe.
- Polno besedilo: a38aa.pdf
- Viri:
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- Nasr, A., Yang, F., Zhang, Y., Wang, T., Hassan, M. (2021). Analysis of the flow pattern and flow rectification measures of the side-intake forebay in a multi-unit pumping station. Water (Switzerland) 13(15). https://doi.org/10.3390/w13152025.
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- Song, W., Pang, Y., Shi, X., Xu, Q. (2018). Study on the Rectification of Forebay in Pumping Station. Math. Probl. Eng. 2018. https://doi.org/10.1155/2018/2876980.
- Xu, C., Zhang, H., Zhang, X., Han, L., Wang, R., Wen, Q., Ding, L. (2015). Numerical Simulation Of The Impact Of Unit Commitment Optimization And Divergence Angle On The Flow Pattern Of Forebay. Int. J. HEAT Technol. 33(2), 91–96. https://doi.org/10.18280/ijht.330215.
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- Zheng, X., Zhang, P., Zhang, W., Yu, Y., Zhao, Y. (2023). Numerical Study on the Influence of Combined Rectification Facilities on the Flow in the Forebay of Pumping Station. Water (Switzerland) 15(21). https://doi.org/10.3390/w15213847.