Acoustic Characteristics of a Gas Turbine Exhaust Model

[+] Author and Article Information
J. R. Cummins

Technical Resources Operation, Gas Turbine Products Division, General Electric Company, Schenectady, N. Y.

J. Eng. Power 96(3), 181-184 (Jul 01, 1974) (4 pages) doi:10.1115/1.3445791 History: Received July 31, 1973; Online July 14, 2010


To investigate the sources of acoustic radiation from a gas turbine exhaust, a one-seventh scale model has been constructed. The model geometrically scales the flow path downstream of the rotating parts including support struts and turning vanes. A discussion and comparison of different kinds of aerodynamic and acoustic scaling techniques are given. The effect of the temperature ratio between model and prototype is found to be an important parameter in comparing acoustical data.

Copyright © 1974 by ASME
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