Application Of A Linear Microphone Array For Noise Source Detection
In The CIRA Calibration Tunnel #2 (CT2)
Author(s)
A. Ragni. P. Jordan, J. Fitzpatrick
Abstract
Application of a linear microphone array for
noise source detection in the CIRA calibration
tunnel #2 (CT2)
A. Ragni*, P. Jordan^, J. Fitzpatrick^
* Department of Experimental Aerodynamics Methodologies
CIRA - Italian Aerospace Research Centre, Capua, Italy
* Mechanical Engineering Dept., Trinity College, Dublin, Ireland
Abstract
This paper describes the use of a linear microphone array to detect noise sources
in a small open jet wind tunnel. The objective was to assess the capacity of the
array to identify sources in the test section and to develop a measurement
methodology appropriate for this. The tests were performed in a small, low
speed, open jet, calibration tunnel at the Experimental Aerodynamics
Laboratories of CIRA. The source was effected using a small loudspeaker placed
in different positions along the tunnel centreline and the localisation was
attempted with and without flow in the test chamber. Results show that in the
absence of flow, the system correctly identifi
Keywords
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