A New Diffuser Mapping Technique—Part 1: Studies in Component Performance

[+] Author and Article Information
D. Japikse

Concepts ETI, Inc., Norwich, Vt.

J. Fluids Eng 108(2), 148-156 (Jun 01, 1986) (9 pages) doi:10.1115/1.3242554 History: Received September 24, 1984; Online October 26, 2009


A rigorous derivation of the K = Cpi − Cp diffuser recovery and loss equation is presented and the critical assumptions to yield this simplified relationship are critiqued. Qualified confirmation of the equation is achieved using precise laboratory data. A new diffuser loss-map is presented which facilitates engineering diffuser design work, even when a recovery map is unavailable. Numerous application examples for turbomachinery analysis are given including the application to a turbomachinery cascade with strong turning.

Copyright © 1985 by Concepts ETI, Inc.
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