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

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)

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Document Details

Document Type
Technical Report
Publication Date
Mar 20, 1978
Accession Number
ADA058680

Entities

People

  • A. M. Yocum
  • T. Seybert
  • W. S. Gearhart

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Flow
  • Air Supplies
  • Angular Momentum
  • Boundary Layer
  • Computational Fluid Dynamics
  • Coordinate Systems
  • Eddies (Fluid Mechanics)
  • Experimental Data
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Measurement
  • Navy
  • Pressure Distribution
  • Static Pressure
  • Test Facilities

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Fluid Dynamics.
  • Instructional Design and Training Evaluation.