Acoustic Velocity Profiler for Laboratory and Field Studies
Publication: Journal of Hydraulic Engineering
Volume 123, Issue 12
Abstract
A monostatic acoustic Doppler velocity profiler (ADVP) for use in hydraulic research is presented including signal treatment algorithms. The 1-MHz ADVP used in the present study has an accuracy better than 2 mms−1 with a range of up to 100 cm for velocities up to 290 cms−1 and a resolution of 256 points in the profile. Results of ADVP measurements in uniform flow in two laboratory open channels with smooth and gravel beds compare favorably with established distribution laws for mean velocity, variance, and Reynold's stress, indicating that the turbulence scales are sufficiently resolved by the instrument. Measurements with the same instrument in a river and a lake illustrate that it is capable of producing excellent results in the field as well. It was demonstrated that, unaffected by water quality, the instrument is a good research tool for nonintrusive and accurate instantaneous profile measurements under turbulent flow conditions.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 123 • Issue 12 • December 1997
Pages: 1089 - 1098
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Dec 1, 1997
Published in print: Dec 1997
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