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Updated: Dec 29, 2025

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe
Published on: December 3, 2016
A note on wind velocity and pressure spectra inside compact spherical porous microphone windscreens
Feng Niu1, Sipei Zhao2, Xiaojun Qiu2
1Ministry of Education Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing, China.
Abstract:
Simultaneous measurements of wind velocity and pressure fluctuations were conducted in a wind tunnel to investigate the wind noise source inside compact spherical open celled porous windscreens. The existing outdoor wind noise models are found to be inadequate to predict the wind noise inside a wind tunnel. This paper proposes a model to predict the interior stagnation pressure, which agrees with the wind noise measured inside the windscreen within a bandwidth, where the exterior turbulence-turbulence interaction pressure overestimates the wind noise level. The limitations of the proposed model and other potential sources for wind noise inside porous windscreens are discussed.
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