AN INVESTIGATION OF THE SECONDARY FLOW PHENOMENA IN A CASCADE OF HIGH-DEFLECTION AXIAL-FLOW IMPULSE TURBINE BLADES.

Abstract

Cascade tests were performed on models of the rotor blades of a high-deflection, axial-flow impulse turbine to determine the secondary flow losses. The tests were performed at the Rectilinear Cascade Test Facility of the Turbo-Propulsion Laboratories of the Department of Aeronautics, Naval Postgraduate School. The results were compared with the predicted losses from various formulas that have been proposed in the technical literature. The comparison showed that most formulas predict a secondary loss that is about ten times as high as that determined in the present tests. Photographs were obtained of the boundary layer traces by the use of lamp black coating. These photographs show the effects of secondary flows on the performance of a cascade. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1966
Accession Number
AD0807392

Entities

People

  • Rodney Loren Bown

Organizations

  • Naval Postgraduate School

Tags

DTIC Thesaurus Topics

  • Axial Flow
  • Boundary Layer
  • Computational Fluid Dynamics
  • Deflection
  • Flow
  • Fluid Flow
  • Photographs
  • Research Facilities
  • Secondary Flow
  • Test Facilities
  • Turbine Blades
  • Turbines

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Spectroscopy.