Sound propagation in curved ductsAn analysis of the sound field in a circularly curved duct of rectangular cross-section is carried out for both rigid and locally-reacting absorbing walls. The field is excited by a piston source at one end of the duct section, and comparisons of the acoustic field and the net power flow along the duct axis are made with corresponding results for a straight duct section for various frequencies. It is found that in general the curved duct yields a significant increase in sound attenuation along the duct axis as compared to the straight duct.
Document ID
19750041694
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Myers, M. K.
Mungur, P. (George Washington University; NASA, Langley Research Center Hampton, Va., United States)
Date Acquired
August 8, 2013
Publication Date
March 1, 1975
Subject Category
Acoustics
Report/Patent Number
AIAA PAPER 75-497
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Aero-Acoustics Conference
Location: Hampton, VA
Start Date: March 24, 1975
End Date: March 26, 1975
Sponsors: American Institute of Aeronautics and Astronautics