Brief Communication: Measurement of Boundary Layer Turbulent Transition Using an Acoustic Microphone Unit

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Authors Abstract
Content
In this article the transition of a laminar boundary layer (BL) over a flat plate is characterized using an acoustic technique with a pitot probe linked to a microphone unit. The probe was traversed along a BL plate at a fixed wind tunnel flow velocity of 5.5 m/s. A spectral analysis of the acoustic fluctuations showed that this setup can estimate the streamwise location and length of the BL transition region, as well as the BL thickness, by using the intermittency similitude approach. Further work is required to quantify the uncertainty caused by signal attenuation within the data acquisition system.
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DOI
https://doi.org/10.4271/01-18-02-0011
Pages
7
Citation
Lawson, N., and Zachos, P., "Brief Communication: Measurement of Boundary Layer Turbulent Transition Using an Acoustic Microphone Unit," SAE Int. J. Aerosp. 18(2):167-173, 2025, https://doi.org/10.4271/01-18-02-0011.
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Publisher
Published
Jul 16
Product Code
01-18-02-0011
Content Type
Journal Article
Language
English