TY - JOUR

T1 - Laboratory Modeling of an Axial Flow Micro Hydraulic Turbine

AU - Suslov, Daniil

AU - Litvinov, Ivan

AU - Gorelikov, Evgeny

AU - Shtork, Sergey

AU - Wood, David

N1 - Funding Information: Funding: The work including measurements of flow characteristics and data analysis was carried out with the state support of a contract with the Ministry of Education and Science of the Russian Federation (Agreement No. 075-15-2019-1923). The design and installation of the experimental setup was carried out partly within the framework of a state contract with IT SB RAS (Project No. 121031800229-1). Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2022/1/1

Y1 - 2022/1/1

N2 - This article is devoted to detailed experimental studies of the flow behind the impeller of an air model of a propeller-type microhydroturbine in a wide range of operating parameters. The measurements of two component distributions of averaged velocities and pulsations for conditions from part load to strong overload are conducted. It is shown that the flow at the impeller outlet becomes swirled when the hydraulic turbine operating mode shifts from the optimum one. The character of the behavior of the integral swirl number, which determines the state of the swirled flow, is revealed. Information about the flow peculiarities can be used when adjusting the hydraulic unit mode to optimal conditions and developing recommendations to expand the hydraulic turbine operation control range with preservation of high efficiency. This stage will significantly save time at the stage of equipment design for specific field conditions of water resource.

AB - This article is devoted to detailed experimental studies of the flow behind the impeller of an air model of a propeller-type microhydroturbine in a wide range of operating parameters. The measurements of two component distributions of averaged velocities and pulsations for conditions from part load to strong overload are conducted. It is shown that the flow at the impeller outlet becomes swirled when the hydraulic turbine operating mode shifts from the optimum one. The character of the behavior of the integral swirl number, which determines the state of the swirled flow, is revealed. Information about the flow peculiarities can be used when adjusting the hydraulic unit mode to optimal conditions and developing recommendations to expand the hydraulic turbine operation control range with preservation of high efficiency. This stage will significantly save time at the stage of equipment design for specific field conditions of water resource.

KW - Axial micro hydraulic turbine

KW - Hydraulic turbine efficiency

KW - Laser-Doppler anemometer (LDA)

KW - Swirl number

UR - http://www.scopus.com/inward/record.url?scp=85122242040&partnerID=8YFLogxK

U2 - 10.3390/app12020573

DO - 10.3390/app12020573

M3 - Article

AN - SCOPUS:85122242040

VL - 12

JO - Applied Sciences (Switzerland)

JF - Applied Sciences (Switzerland)

SN - 2076-3417

IS - 2

M1 - 573

ER -