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

P. Bremner; C. Todter; S. Clifton

doi:10.4271/2015-01-2325

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.

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Sideglass Turbulence and Wind Noise Sources Measured with a High Resolution Surface Pressure Array 2015-01-2325

SAE MOBILUS