Improved ADCP performance using a hydrodynamically designed boom mount

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DOIResolve DOI: http://doi.org/10.1175/1520-0426(1993)010<0629:IAPUAH>2.0.CO;2
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TypeArticle
Journal titleJournal of Atmospheric and Oceanic Technology
Volume10
Issue4
Pages629636; # of pages: 8
SubjectADCP; fairing
AbstractThis paper presents the results of the design and testing of a hydrodynamic mount for a direct-reading 150 kHz acoustic Doppler current profiler (ADCP) operated over the side of a small inshore vessel in transect mode (i.e., while steaming). The mount consists of a symmetric wing section encompassing the ADCP pressure housing and a custom teardrop-shaped fairing surrounding the transducer heads. It was found that the longitudinal (along-ship) force resulting from the form drag and the wave generation on the hydrodynamic mount was less than one-half of that on the unfaired ADCP. This together with improved flow characteristics resulted in a reduction in the standard deviations of the measured currents from 6 to 10 cm s/sup -1/ during a survey in 1990 without the fairing to 3-5 cm s/sup -1/ for a survey in 1991 with the fairing. The mount also permitted a doubling in ship speed from about 2.0 to 4.0 m s/sup -1/ (4-8 kt). The results also indicate the minimum noise levels that can be expected at the spatial resolutions usually required in inshore regions.
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedYes
IdentifierIR-1992-04
NRC number5403
NPARC number8894973
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Record identifierc2c0c152-63ff-4ad9-ba01-b611335331e8
Record created2009-04-22
Record modified2016-05-09
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