Experimental research of francis pump-turbines with splitters in a pump mode

Rusanov, Andrey; Khoryev, Oleg; Agibalov, Yevgen; Bykov, Yu. V.; Korotaіev, Pavlo

doi:10.1109/khpiweek51551.2020.9250157

Cited by 2 publications

(2 citation statements)

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“…These characteristics indicate that there is a small positive swirl behind the runner (Fig. 8), which was also noted during the mathematical study of the ОRО200 blade system [11,[14][15].…”

Section: Figure 7: Distribution Of Velocity Components At the Exit Fr...supporting

confidence: 68%

“…The basis for numerical analysis is mathematical models of the working process. Not only the development of working process modeling methods that use the results of solving problems of the three-dimensional viscous flow [8,11] but also methods for calculating energy characteristics based on simplified flow models are widely used as well. Improving the energy parameters of a reversible hydraulic machine depends on the hydrodynamic characteristics of the parts of the water passage.…”

Section: Introductionmentioning

confidence: 99%

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Study of the Characteristics of the Runner Blade System of a Hydraulic Machine

2022

IJOMAM

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The paper is devoted to the development of a methodology for determining and analyzing the main characteristics of the elementary lattices of the runner blade system of a reversible hydraulic machine. Equations that describe the kinematics of the flow in absolute and relative motion at the inlet and outlet of the runner are given. This method of calculation and analysis of elementary lattice characteristics makes it possible to evaluate their influence on the runner of a reversible hydraulic machine, which helps to assess the degree of consistency of elementary lattices that make up the runner spatial lattice. To study the operating process, the equations of dimensionless coefficients of head, moment, and power were applied to the runner's elementary lattice. The relationship between the hydrodynamic, kinematic, and energy parameters of elementary lattices and the spatial lattice of the runner is shown. The regularities of changes in the hydrodynamic characteristics of elementary lattices are determined, which makes it possible to determine the loss coefficient of the runner in the optimal operation mode and to evaluate the consistency of the runner elementary lattices with each other. Numerical modeling of a 3D model of the ORO200 runner was carried out, resulting in a spatial model of the fluid flow. The distribution of static pressure and velocity components is obtained. All these approaches help to obtain the nature of fluid flow in the blade system.

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Section: Figure 7: Distribution Of Velocity Components At the Exit Fr...supporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%