Acoustic measurement of boundary layer flow parameters
Acoustic measurement of boundary layer flow parameters
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.
278-296
Smith, M.G.
1bc8608d-0178-4793-8f73-46a6c6b9b279
Whale, S.
83d2c54c-9223-4394-92c4-945d29cb1703
20 March 2007
Smith, M.G.
1bc8608d-0178-4793-8f73-46a6c6b9b279
Whale, S.
83d2c54c-9223-4394-92c4-945d29cb1703
Smith, M.G. and Whale, S.
(2007)
Acoustic measurement of boundary layer flow parameters.
Journal of Sound and Vibration, 301 (1-2), .
(doi:10.1016/j.jsv.2006.10.007).
Abstract
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.
This record has no associated files available for download.
More information
Submitted date: June 2005
Published date: 20 March 2007
Identifiers
Local EPrints ID: 37604
URI: http://eprints.soton.ac.uk/id/eprint/37604
ISSN: 0022-460X
PURE UUID: 9567d412-0c5c-461f-8ddd-1d9ad572a83d
Catalogue record
Date deposited: 24 May 2006
Last modified: 15 Mar 2024 08:00
Export record
Altmetrics
Contributors
Author:
M.G. Smith
Author:
S. Whale
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics