The application of microphone array system and numerical fluid algorithm for jet propulsion wind tunnel noise prevention

Zhao Cheng Zhuo, Yu Cheng Lin, Wei Hsiang Wang, Stone Cheng, Wu Shung Fu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

For improving the wind tunnel noise which reduces by supersonic air fluid, this study develops a microphone array system that integrates beamforming algorithm and NI-PXI data acquisition (DAQ) system. Using 16 channel uniform circular microphones array to measure the noise caused by the jet propulsion system. For prove the feasibility of the microphone system, this system passed the dual frequency test inside the Anechoic chamber and outdoor in succession. Then the system analyzes the sound pressure level (SPL) and frequency spectrum when undergoing wind tunnel tests, acquires SPL visualized contour of sound filed, and localize the sound sources. Furthermore, with the improvement of the life quality, the noise induced by aero acoustic becomes one of the most important and complicated problems of the noise control. This study develops simulation method to analyze noise problems. Firstly, this study will use CFD software to construct the simulation way of wind tunnel test equipment and acoustic field. Secondly, it will simulate transient flow field and spectrum. Both numerical result and experiment detections show that the maximum noise is at the same location. Finally, this study purposes some candidate of strategies about noise prevention at the noise sources to achieve the goal of wind tunnel facility noise prevention.

Original languageEnglish
Title of host publication41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
Pages4333-4343
Number of pages11
StatePublished - 1 Dec 2012
Event41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012 - New York, NY, United States
Duration: 19 Aug 201222 Aug 2012

Publication series

Name41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
Volume5

Conference

Conference41st International Congress and Exposition on Noise Control Engineering 2012, INTER-NOISE 2012
CountryUnited States
CityNew York, NY
Period19/08/1222/08/12

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