Acoustic measurement of boundary layer flow parameters
Smith, M.G. and Whale, S. (2007) Acoustic measurement of boundary layer flow parameters. Journal of Sound and Vibration, 301, (1-2), 278-296. (doi:10.1016/j.jsv.2006.10.007).
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The principle of an ultrasonic method for measuring the parameters of a boundary layer flow is investigated using a mathematical model of the sound field created by a compact piston in a solid boundary, radiating into a parallel shear flow. The model, based on a wavenumber decomposition of the problem, is used to demonstrate that dispersive effects in the streamwise direction are a function of the free-stream flow velocity and the boundary layer displacement thickness, and that a multifrequency measurement of phase velocity between two wall-mounted transducers can in principle be used to determine these parameters. Results from a preliminary experiment to demonstrate the method are presented.
|Subjects:||Q Science > QA Mathematics
T Technology > TL Motor vehicles. Aeronautics. Astronautics
|Divisions:||University Structure - Pre August 2011 > Institute of Sound and Vibration Research > ISVR Consulting
|Date Deposited:||24 May 2006|
|Last Modified:||25 Apr 2013 14:06|
|Contributors:||Smith, M.G. (Author)
Whale, S. (Author)
|Date:||20 March 2007|
|Contact Email Address:||M.G.Smith@soton.ac.uk|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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