NDLI: Source methodology for turbofan noise prediction (source3d technical documentation)

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Source methodology for turbofan noise prediction (source3d technical documentation)

Content Provider	NASA Technical Reports Server (NTRS)
Author	Meyer, Harold D.
Copyright Year	1999
Description	This report provides the analytical documentation for the SOURCE3D Rotor Wake/Stator Interaction Code. It derives the equations for the rotor scattering coefficients and stator source vector and scattering coefficients that are needed for use in the TFANS (Theoretical Fan Noise Design/Prediction System). SOURCE3D treats the rotor and stator as isolated source elements. TFANS uses this information, along with scattering coefficients for inlet and exit elements, and provides complete noise solutions for turbofan engines. SOURCE3D is composed of a collection of FORTRAN programs that have been obtained by extending the approach of the earlier V072 Rotor Wake/Stator Interaction Code. Similar to V072, it treats the rotor and stator as a collection of blades and vanes having zero thickness and camber contained in an infinite, hardwall annular duct. SOURCE3D adds important features to the V072 capability-a rotor element, swirl flow and vorticity waves, actuator disks for flow turning, and combined rotor/actuator disk and stator/actuator disk elements. These items allow reflections from the rotor, frequency scattering, and mode trapping, thus providing more complete noise predictions than previously. The code has been thoroughly verified through comparison with D.B. Hanson's CUP2D two- dimensional code using a narrow annulus test case.
File Size	2772129
Page Count	82
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19990028361
Archival Resource Key	ark:/13960/t2r54k67h
Language	English
Publisher Date	1999-03-01
Access Restriction	Open
Subject Keyword	Acoustics Rotors Documentation Scattering Coefficients Rotor Aerodynamics Fortran Acoustic Simulation Upwash Vorticity Wakes Stators Turbofan Engines Applications Programs Computers Noise Prediction Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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