Accession Number : AD0807392

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

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Bown, Rodney Loren

Report Date : DEC 1966

Pagination or Media Count : 59

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)

Descriptors :   *GAS TURBINES), (*TURBINE BLADES, PERFORMANCE(ENGINEERING)), (*CASCADE STRUCTURES, THESES, OPERATION, COMPUTER PROGRAMMING, DEFLECTION, GASES, DYNAMICS, PRESSURE, CALIBRATION, FAILURE(ELECTRONICS), GAS FLOW, REYNOLDS NUMBER, VIBRATION, SECONDARY FLOW, ACCELERATION, DATA PROCESSING, TEST EQUIPMENT, ERRORS, MANOMETERS.

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE