Investigation of the Erosion Characteristics in the Distribution Parts of Pelton Turbine

Pelton turbine, as its working principle, can perform in the high head condition especially in the southwest mountainous region in China. When the flow contains silt, it will induce the erosion in the bucket and needle structure which affects the efficiency and furthermore the service life. This pap...

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Bibliographic Details
Published in:Journal of Applied Fluid Mechanics 2021-11, Vol.14 (6), p.1809-1816
Main Authors: Han, L, Wang, Y, Zhang, G F, Wei, X Z
Format: Article
Language:English
Subjects:
Efficiency
Experiments
Flow velocity
Fluid flow
Free surfaces
Hydraulics
Methods
Mountain regions
Mountainous areas
Power plants
Protective coatings
Reynolds number
Service life
Silt
Simulation
Surface flow
three-phase flow
vof method
euler-lagrange methodology
dpm model
Turbines
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Summary:Pelton turbine, as its working principle, can perform in the high head condition especially in the southwest mountainous region in China. When the flow contains silt, it will induce the erosion in the bucket and needle structure which affects the efficiency and furthermore the service life. This paper performs unsteady air-liquid-solid three-phases simulation focusing on the distribution tube and needle parts. Volume of Fluid (VOF) method is used for capturing the free surface flow, at the same time, silt particle is simplified as the sphere particle and simulated through the Discrete Particle Model (DPM). Furthermore, flow detail and erosion information are obtained by conjugating both the former methodologies. Finally, particle size is analyzed in order to investigate the effect of erosion characteristic to the flow passage of Pelton turbine which aims to improve the turbine efficiency.
ISSN:1735-3572
1735-3645
DOI:10.47176/jafm.14.06.32868