The Formation of a Shock Wave in a Blade Passage of a Partial Admission Turbine

[+] Author and Article Information
W. A. Woods

Mechanical Engineering Department, University of Liverpool, Liverpool, England; Massachusetts Institute of Technology, Cambridge, Mass.

F. Kuo-Hua Chu

Gas Turbine Division, Dresser-Clock Co., Olean, N. Y.

R. W. Mann

Mechanical Engineering Department, Massachusetts Institute of Technology, Cambridge, Mass.

J. Basic Eng 90(4), 555-562 (Dec 01, 1968) (8 pages) doi:10.1115/1.3605192 History: Received February 06, 1968; Online November 03, 2011


The problem of unsteady flow in the blade passage of a partial admission impulse turbine with supersonic nozzle flow is introduced. Previous work carried out at M.I.T. revealed the presence of a shock wave at the entrance to the blade passages and this report sets out to predict the formation of such a shock wave using a one-dimensional theory. The one-dimensional theory is discussed in some detail and a novel method for dealing with the inflow boundary conditions is developed. Details of a characteristic calculation are given, and this is matched with a shock wave analysis to predict the formation of the shock wave. The implications of the theoretical work are discussed and experimental results obtained from a hydraulic analogy are presented which confirm the analysis.

Copyright © 1968 by ASME
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