THE MEASUREMENT OF FLOW VELOCITY AND ACOUSTIC PARTICLE-VELOCITY USINGPARTICLE-IMAGE VELOCIMETRY

Citation
Db. Hann et Ca. Greated, THE MEASUREMENT OF FLOW VELOCITY AND ACOUSTIC PARTICLE-VELOCITY USINGPARTICLE-IMAGE VELOCIMETRY, Measurement science & technology, 8(12), 1997, pp. 1517-1522
Citations number
16
ISSN journal
09570233
Volume
8
Issue
12
Year of publication
1997
Pages
1517 - 1522
Database
ISI
SICI code
0957-0233(1997)8:12<1517:TMOFVA>2.0.ZU;2-8
Abstract
This paper outlines the method by which the flow velocity and acoustic particle velocity can be measured instantaneously over an area using particle-image velocimetry techniques. Theoretical expressions for the power spectrum and autocorrelation function of the intensity distribu tion in the plane of the interrogation area when a flow and sound fiel d is present are derived and it is shown that the flow velocity and th e acoustic particle velocity can be measured. The technique is used to measure the velocities in a standing wave tube with a monotonic sound field of sufficient strength such that acoustic streaming is set up. The limitations of this technique are also discussed.