Accession Number:

ADA058680

Title:

Studies of a Method to Prevent Draft Tube Surge and the Analysis of Wicket Gate Flow and Forces.

Descriptive Note:

Technical memo.,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB

Personal Author(s):

Report Date:

1978-03-20

Pagination or Media Count:

74.0

Abstract:

An air flow facility was used to simulate the flow through a set of wicket gates and the draft tube typical of a hydroelectric pump-turbine. A method of preventing draft tube surge was studied, which consists of injecting some high energy fluid from the spiral casing into the draft tube counter to the direction of the swirl. The results of these tests provide design criteria for selecting injection nozzle configuration and estimating the required injection flow for a turbine of given performance characteristics. A potential solution of the flow through a two-dimensional radial cascade of airfoils is also presented. The predicted flow field characteristics are compared with experimental measurements, and the results indicate very good agreement between the measured and predicted values. Author

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE