The use of non-conventional diffusing systems for centrifugal compressors has been mandated by the smaller diameter of many advanced turbofan engines. Optimizing the design of these geometrically complex diffusers by rotating component tests is both expensive and time-consuming. Methods of designing and static blow testing low-diameter, controlled-contour passage diffusers have been previously reported in which scaled-up models of six diffuser passages were constructed and tested at a Reynolds number comparable to that encountered in rotating component tests. One design was fabricated in full size and run in both a static blow test and a rotating component test. This paper reports on the performance of this design at several Reynolds numbers up to those encountered in engine application for several diffuser throat blockages. It is shown that as with geometrically simpler passages such as conical diffusers, static blow tests can also be used to optimize the design of geometrically more complex diffusing passages.
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ASME 1981 International Gas Turbine Conference and Products Show
March 9–12, 1981
Houston, Texas, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7961-0
PROCEEDINGS PAPER
Effects of Size and Reynolds’ Number on Centrifugal Diffuser Performance
L. W. Blair
L. W. Blair
General Electric Co., Lynn, MA
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C. J. Russo
General Electric Co., Lynn, MA
L. W. Blair
General Electric Co., Lynn, MA
Paper No:
81-GT-8, V001T03A006; 5 pages
Published Online:
April 15, 2015
Citation
Russo, CJ, & Blair, LW. "Effects of Size and Reynolds’ Number on Centrifugal Diffuser Performance." Proceedings of the ASME 1981 International Gas Turbine Conference and Products Show. Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery. Houston, Texas, USA. March 9–12, 1981. V001T03A006. ASME. https://doi.org/10.1115/81-GT-8
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