0
TECHNICAL PAPERS

Flow Analysis Inside a Pelton Turbine Bucket

[+] Author and Article Information
B. Zoppé

 Laboratoire des Ecoulements Géophysiques Industriels, B.P. 53, 38041 Grenoble Cédex 9, France

C. Pellone

 Centre National de la Recherche Scientifique, Grenoble, France

T. Maitre

 Institut National Polytechnique Grenoble, France

P. Leroy

 ALSTOM Power Hydro, B.P. 75, 38041 Grenoble, France

J. Turbomach 128(3), 500-511 (Jan 09, 2006) (12 pages) doi:10.1115/1.2184350 History: Received November 16, 2004; Revised January 09, 2006

The aim of this work is to provide a detailed experimental and numerical analysis of the flow in a fixed bucket of a Pelton turbine. The head, jet incidence, and flow rate have been varied to cover a wide range of the turbine functioning points. The experimental analysis provides measurements of pressure and torque as well as flow visualization. The numerical analysis is performed with the FLUENT code using the two-phase flow volume of fluid method. The results present a good consistency with experimental data. In particular, the pressure distribution is very well predicted for the whole range of the studied parameters. A detailed analysis of torque and thrust allows evaluating the losses due to the edge and the cutout of the bucket. These results give insight into the benefit we can expect of steady flow calculations through the optimization process of the design of Pelton turbines.

Copyright © 2006 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 3

Bucket experimental devices

Grahic Jump Location
Figure 4

Schematic views of the bucket

Grahic Jump Location
Figure 5

Location of the pressure intakes

Grahic Jump Location
Figure 6

Different side and top views of the sheets of water

Grahic Jump Location
Figure 7

Diagram of the calculation blocks

Grahic Jump Location
Figure 8

View of the meshes

Grahic Jump Location
Figure 9

Free surface of the jet

Grahic Jump Location
Figure 1

Diagram of the testing rig

Grahic Jump Location
Figure 19

Edge and cut-out losses

Grahic Jump Location
Figure 20

Non-dimensional forces and Pelton turbine efficiency

Grahic Jump Location
Figure 10

Thickness of the sheet of water in the reference plane

Grahic Jump Location
Figure 11

Pressure coefficient and water volume fraction

Grahic Jump Location
Figure 12

Free surface of the jet

Grahic Jump Location
Figure 13

Pressure coefficient and water volume fraction

Grahic Jump Location
Figure 14

Pressure coefficient: numerical and experimental results

Grahic Jump Location
Figure 15

Schematic view of the boundary surfaces

Grahic Jump Location
Figure 18

Cut-out leakage flow rate

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In