The role of unsteady aerodynamics in aeroacousticsThe role of acoustics and unsteady aerodynamics research in understanding the fundamental physics of time-dependent fluid phenomena is reviewed. The key issues are illustrated by considering the sound radiation of turbulent jets and the aeroacoustics of rotating bodies such as helicopter rotors. The importance of computational methods as a link between aerodynamics and acoustics is also discussed. It is noted that where acoustic analogy techniques are sufficiently accurate, unsteady aerodynamics can be used for acoustic prediction. In supersonic problems where acoustics and aerodynamics are coupled, an integrated nonlinear analysis can provide an accurate problem solution.
Document ID
19880061692
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pao, S. Paul (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Acoustics
Report/Patent Number
AIAA PAPER 88-3711
Meeting Information
Meeting: AIAA, ASME, SIAM, and APS, National Fluid Dynamics Congress