Injection Nozzle Geometries Pursuant to the Reduction of Draft Tube Surge in Hydroelectric Pump-Turbines.

Abstract

A method to eliminate draft tube surge in pump-turbines is proposed by injecting some high energy fluid from the spiral casing into the draft tube counter to the direction of the swirling flow. An air flow facility was used to simulate the rotating flow in the draft tube. This thesis is the result of an investigation of the effectiveness of various nozzle geometries in reducing draft tube surge for given surging conditions. The minimum ratio of bypass flow to draft tube flow required to eliminate surge is determined. The results of these tests provide basic design criteria for selecting injection nozzle configuration. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1978
Accession Number
ADA058826

Entities

People

  • Thomas A. Seybert

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Flow
  • Air Supplies
  • Angular Momentum
  • Calibration
  • Design Criteria
  • Eddies (Fluid Mechanics)
  • Energy
  • Flow
  • Fluid Flow
  • Geometry
  • High Energy
  • Instrumentation
  • Navy
  • Pressure Transducers
  • Test Facilities
  • Transducers
  • Vortices

Readers

  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Combustion and Flow Dynamics.