The prediction of fan exhaust noise propagation

Yuan Zhao, Philip J. Morris

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


This paper describes a methodology for the prediction of fan exhaust noise propagation. The linearized Euler equations are solved in the frequency domain using the Streamline Upwind Petrov Galerkin method. This technique enables a stable numerical solution of the linearized Euler equations. The far field radiation is calculated using a frequency domain permeable surface Ffowcs Williams-Hawkings solver. The solver is validated for a simple source in a stationary medium and a moving stream. Both analytical and numerical solutions are used as input on the acoustic data surface. Calculations are presented of fan exhaust noise radiation from the the Advanced Noise Control Facility at the NASA Glenn Research Center. The exhaust duct modal amplitude conditions are taken from experimental measurements. The mean flow in the fan exhaust stream is calculated using a commercial application, Star-CD, which gives the viscous mean flow on an unstructured grid. Comparison are made between the predicted and measured far field noise. The effect of both numerical parameters as well as operating conditions on the noise predictions are presented.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Number of pages16
ISBN (Print)1563478099, 9781563478093
StatePublished - 2006
Event12th AIAA/CEAS Aeroacoustics Conference - Cambridge, MA, United States
Duration: May 8 2006May 10 2006

Publication series

NameCollection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference


Other12th AIAA/CEAS Aeroacoustics Conference
Country/TerritoryUnited States
CityCambridge, MA

All Science Journal Classification (ASJC) codes

  • General Engineering


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