Analysis of the flow structure in the model of a microhydraulic turbine. / Shtork, S. I.; Суслов, Даниил Андреевич; Litvinov, I. V. et al.
In: Journal of Applied Mechanics and Technical Physics, Vol. 61, No. 5, 09.2020, p. 807-813.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Analysis of the flow structure in the model of a microhydraulic turbine
AU - Shtork, S. I.
AU - Суслов, Даниил Андреевич
AU - Litvinov, I. V.
AU - Gorelikov, E. Yu
N1 - Funding Information: The design and installation of the experimental testbed is carried out within the framework of the State Task of the Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences. Velocity distributions were measured with financial support of the Russian Foundation for Basic Research and the Government of the Novosibirsk Region (Grant No. 18-48-540033). Publisher Copyright: © 2020, Pleiades Publishing, Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/9
Y1 - 2020/9
N2 - This paper describes the results of experimental studies of a flow using the prototype of a propeller-type microhydraulic turbine. The tests are carried out on a testbed in which atmospheric air is used as a working medium. The measurements carried out with the help of a two-component laser-Doppler anemometer are used to obtain velocity distributions behind a runner in the case where the operating modes of the device change in a wide range. It is shown that the created model microhydraulic turbine has optimal parameters for the conditions set during the design, and a change in the operating mode of the device from nominal parameters to underload or overload increases the residual swirl of the flow and the generation of strong hydrodynamic instability in the form of a precessing vortex rope. In this case, axial velocity over the cross section is distributed unevenly and the flow pulsation level is increased.
AB - This paper describes the results of experimental studies of a flow using the prototype of a propeller-type microhydraulic turbine. The tests are carried out on a testbed in which atmospheric air is used as a working medium. The measurements carried out with the help of a two-component laser-Doppler anemometer are used to obtain velocity distributions behind a runner in the case where the operating modes of the device change in a wide range. It is shown that the created model microhydraulic turbine has optimal parameters for the conditions set during the design, and a change in the operating mode of the device from nominal parameters to underload or overload increases the residual swirl of the flow and the generation of strong hydrodynamic instability in the form of a precessing vortex rope. In this case, axial velocity over the cross section is distributed unevenly and the flow pulsation level is increased.
KW - experiment
KW - hydroelectric power plants
KW - laser-Doppler anemometer
KW - microhydroturbines
KW - propeller hydroturbine
KW - vortex rope precession
UR - http://www.scopus.com/inward/record.url?scp=85097069050&partnerID=8YFLogxK
U2 - 10.1134/S0021894420050156
DO - 10.1134/S0021894420050156
M3 - Article
AN - SCOPUS:85097069050
VL - 61
SP - 807
EP - 813
JO - Journal of Applied Mechanics and Technical Physics
JF - Journal of Applied Mechanics and Technical Physics
SN - 0021-8944
IS - 5
ER -
ID: 27520178