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Sideglass Turbulence and Wind Noise Sources Measured with a High Resolution Surface Pressure Array

Journal Article
2015-01-2325
ISSN: 1946-3995, e-ISSN: 1946-4002
Published June 15, 2015 by SAE International in United States
Sideglass Turbulence and Wind Noise Sources Measured with a High Resolution Surface Pressure Array
Sector:
Citation: Bremner, P., Todter, C., and Clifton, S., "Sideglass Turbulence and Wind Noise Sources Measured with a High Resolution Surface Pressure Array," SAE Int. J. Passeng. Cars - Mech. Syst. 8(3):1063-1074, 2015, https://doi.org/10.4271/2015-01-2325.
Language: English

Abstract:

The authors report on the design and application of a high resolution micro-electro-mechanical (MEMS) microphone array for automotive wind noise engineering. The array integrates both sensors and random access memory (RAM) chips on a flexible circuit board that eliminates high channel count wiring and allows the array to be deployed on automobile surfaces in a convenient “stick-on/peel-off” configuration.
These arrays have potential application to the quantitative evaluation of interior wind noise from measurements on a clay model in the wind tunnel, when used in conjunction with a body vibro-acoustic model. The array also provides a high resolution turbulence measurement tool, suitable for validation of computation fluid dynamics (CFD) simulations for wind noise.
The authors' report on the wavenumber-frequency structure of flow turbulence measured in different flow regions on a side glass and the corresponding contributions to interior wind noise.