Turbulence Intensity and Length Scale Measurements in Multistage Compressors

[+] Author and Article Information
T. R. Camp

Rolls-Royce plc, Derby DE24 8BJ, United Kingdom

H.-W. Shin

General Electric Aircraft Engines, Cincinnati, OH 45215

J. Turbomach 117(1), 38-46 (Jan 01, 1995) (9 pages) doi:10.1115/1.2835642 History: Received January 31, 1994; Online January 29, 2008


This paper describes the measurement and processing of turbulence data from multistage low-speed compressors. Measurements were made at the same relative positions in three four-stage compressors, each having different levels of the design stage loading coefficient. A new method of data processing to calculate turbulence intensities and integral length scales is outlined. Using this method, integral length scales have been measured in turbomachinery flows for the first time. It is shown how the turbulence intensity and integral length scale vary with position in the blade passage, with changing flow coefficient and with the value of the design stage loading coefficient. The results have been used to specify representative inlet conditions for experimental rigs and to improve the application of CFD turbulence models to turbomachinery modeling.

Copyright © 1995 by The American Society of Mechanical Engineers
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