Simulation of the Secondary Air System of Aero Engines

[+] Author and Article Information
K. J. Kutz, T. M. Speer

MTU Motoren- und Turbinen-Union München GmbH, Dachauer Strasse 665, D-80976 Munich 50, Federal Republic of Germany

J. Turbomach 116(2), 306-315 (Apr 01, 1994) (10 pages) doi:10.1115/1.2928365 History: Received February 04, 1992; Online June 09, 2008


This paper describes a computer program for the simulation of secondary air systems. Typical flow system elements are presented, such as restrictors, tappings, seals, vortices, and coverplates. Two-phase flow as occurring in bearing chamber vent systems is briefly discussed. An algorithm is described for the solution of the resulting nonlinear equations. The validity of the simulation over the engine operation envelope is demonstrated by a comparison with test results.

Copyright © 1994 by The American Society of Mechanical Engineers
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