Numerical Investigation of Three-dimensional Cavitating Flow around a Guide Vane of a Water Turbine

The results of numerical simulation of cavitating flow around the experimental model of a guide vane of a water turbine are given. The possibilities of the detached eddy simulation (DES) method for calculating the flow dynamics around the hydrofoil in two regimes at 3° and 9° angles of attack are an...

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Bibliographic Details
Published in:Fluid dynamics 2019-07, Vol.54 (4), p.441-450
Main Authors: Gavrilov, A. A., Sentyabov, A. V., Finnikov, K. A.
Format: Article
Language:English
Subjects:
Angle of attack
Boundary layers
Cavitation
Classical and Continuum Physics
Classical Mechanics
Computer simulation
Detached eddy simulation
Engineering Fluid Dynamics
Flow velocity
Fluid- and Aerodynamics
Hydraulic turbines
Hydrofoils
Mathematical models
Numerical analysis
Physics
Physics and Astronomy
Simulation methods
Three dimensional flow
Turbines
Turbulence
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Summary:The results of numerical simulation of cavitating flow around the experimental model of a guide vane of a water turbine are given. The possibilities of the detached eddy simulation (DES) method for calculating the flow dynamics around the hydrofoil in two regimes at 3° and 9° angles of attack are analyzed. The mean flow velocity inside the boundary layer is compared with the experimental data. The dimensions and shape of the three-dimensional vapor cavity are presented in various operating regimes. The cavity dynamics and induced pulsations are analyzed.
ISSN:0015-4628
1573-8507
DOI:10.1134/S0015462819040050