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Rotor Wake/Stator Interaction Noise Prediction Code Technical Documentation and User's ManualThis report documents the improvements and enhancements made by Pratt & Whitney to two NASA programs which together will calculate noise from a rotor wake/stator interaction. The code is a combination of subroutines from two NASA programs with many new features added by Pratt & Whitney. To do a calculation V072 first uses a semi-empirical wake prediction to calculate the rotor wake characteristics at the stator leading edge. Results from the wake model are then automatically input into a rotor wake/stator interaction analytical noise prediction routine which calculates inlet aft sound power levels for the blade-passage-frequency tones and their harmonics, along with the complex radial mode amplitudes. The code allows for a noise calculation to be performed for a compressor rotor wake/stator interaction, a fan wake/FEGV interaction, or a fan wake/core stator interaction. This report is split into two parts, the first part discusses the technical documentation of the program as improved by Pratt & Whitney. The second part is a user's manual which describes how input files are created and how the code is run.
Document ID
20110000525
Acquisition Source
Glenn Research Center
Document Type
Contractor Report (CR)
Authors
Topol, David A.
(Pratt and Whitney Aircraft East Hartford, CT, United States)
Mathews, Douglas C.
(Pratt and Whitney Aircraft East Hartford, CT, United States)
Date Acquired
August 25, 2013
Publication Date
December 1, 2010
Subject Category
Aerodynamics
Report/Patent Number
NASA/CR-2010-216818
E-17449
Funding Number(s)
CONTRACT_GRANT: NAS3-25952
WBS: WBS 561581.02.08.03.18.03
Distribution Limits
Public
Copyright
Public Use Permitted.
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