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Prediction of interior noise due to random acoustic or turbulent boundary layer excitation using statistical energy analysisThe feasibility of predicting interior noise due to random acoustic or turbulent boundary layer excitation was investigated in experiments in which a statistical energy analysis model (VAPEPS) was used to analyze measurements of the acceleration response and sound transmission of flat aluminum, lucite, and graphite/epoxy plates exposed to random acoustic or turbulent boundary layer excitation. The noise reduction of the plate, when backed by a shallow cavity and excited by a turbulent boundary layer, was predicted using a simplified theory based on the assumption of adiabatic compression of the fluid in the cavity. The predicted plate acceleration response was used as input in the noise reduction prediction. Reasonable agreement was found between the predictions and the measured noise reduction in the frequency range 315-1000 Hz.
Document ID
19910027855
Document Type
Conference Paper
Authors
Grosveld, Ferdinand W. (NASA Langley Research Center Hampton, VA; Lockheed Engineering and Sciences Co., Houston, TX, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1990
Subject Category
ACOUSTICS
Report/Patent Number
AIAA PAPER 90-3964
Distribution Limits
Public
Copyright
Other