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RESEARCH PAPERS

Assessment of Unsteady Flows in Turbines

[+] Author and Article Information
O. P. Sharma, G. F. Pickett, R. H. Ni

Pratt & Whitney, East Hartford, CT 06108

J. Turbomach 114(1), 79-90 (Jan 01, 1992) (12 pages) doi:10.1115/1.2928001 History: Received January 26, 1990; Online June 09, 2008

Abstract

The impacts of unsteady flow research activities on flow simulation methods used in the turbine design process are assessed. Results from experimental investigations that identify the impact of periodic unsteadiness on the time-averaged flows in turbines and results from numerical simulations obtained by using three-dimensional unsteady Computational Fluid Dynamics (CFD) codes indicate that some of the unsteady flow features can be fairly accurately predicted. Flow parameters that can be modeled with existing steady CFD codes are distinguished from those that require unsteady codes.

Copyright © 1992 by The American Society of Mechanical Engineers
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