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Aeroacoustics and Performance Modeling of a Counter-Rotating Propfan

[+] Author Affiliations
Martin Olausson, Lars-Erik Eriksson

Chalmers University of Technology, Gothenburg, Sweden

Richard Avellán, Niklas Sörman, Filip Rudebeck

Volvo Aero Corporation, Trollhättan, Sweden

Paper No. GT2010-22543, pp. 747-756; 10 pages
doi:10.1115/GT2010-22543
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 7: Turbomachinery, Parts A, B, and C
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4402-1 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

This paper presents a method for design and analysis of counter-rotating propfans with respect to performance and aeroacoustics. The preliminary design method generates the ideal optimum propeller design corrected for losses in terms of profile and compressibility drag. The propeller design is further analyzed by computational fluid dynamics, CFD, to calculate the performance and the deterministic interaction noise. The unsteady flow around the propellers is calculated using URANS such that only one blade per propeller needs to be discretized. The unsteady pressure distribution around the blades is integrated, using a Ffowcs Williams-Hawkings method, to an observer for noise evaluation. The results of the performance analysis, the CFD computations and the aeroacoustic analysis are compared with experimental data available from the nonproprietary reports regarding the counter-rotating propellers developed in the 1980s.

Copyright © 2010 by ASME

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