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A. Lohrmann, R. Cabrera, G. Gelfenbaum, J. Haines (1995)
Direct measurements of Reynolds stress with an acoustic Doppler velocimeterProceedings of the IEEE Fifth Working Conference on Current Measurement
(1981)
Predictions of the contributions
S. Anderson, A. Lohrmann (1995)
Open water test of the SonTek acoustic Doppler velocimeterProceedings of the IEEE Fifth Working Conference on Current Measurement
L. Zedel, A. Hay, R. Cabrera, A. Lohrmann (1996)
Performance of a single-beam pulse-to-pulse coherent Doppler profilerIEEE Journal of Oceanic Engineering, 21
J. Smith, S. Mclean (1977)
Spatially averaged flow over a wavy surfaceJournal of Geophysical Research, 82
D. Cacchione, D. Drake (1979)
A new instrument system to investigate sediment dynamics on continental shelvesMarine Geology, 30
(1995)
ADV operation manual, version 1.0. 30 pp. [Available from SonTek, 6837 Nancy Ridge Drive, Suite A, San Diego, CA 92121.
D. Huntley (1988)
A Modified Inertial Dissipation Method for Estimating Seabed Stresses at Low Reynolds Numbers, with Application to Wave/Current Boundary Layer MeasurementsJournal of Physical Oceanography, 18
C. Butman, R. Chapman (1989)
The 17-Meter Flume at the Coastal Research Laboratory. Part 1. Description and User's Manual
A. Grass (1971)
Structural features of turbulent flow over smooth and rough boundariesJournal of Fluid Mechanics, 50
P. Blinco, E. Partheniades (1971)
Turbulence Characteristics In Free Surface Flows Over Smooth And Rough BoundariesJournal of Hydraulic Research, 9
(1987)
Measurement of turbulence with an acoustic current meter array in the oceanic bottom boundary layer
(1977)
Flow Induced Vibration. Van Nostrand Reinhold
R. Cabrera, K. Deines, B. Brumley, E. Terray (1987)
Development of a Practical Coherent Acoustic Doppler Current ProfilerOCEANS '87
J. Trowbridge, Y. Agrawal (1995)
Glimpses of a wave boundary layerJournal of Geophysical Research, 100
B. Brumley, R. Cabrera, K. Deines, E. Terray (1991)
Performance of a broad-band acoustic Doppler current profilerIEEE Journal of Oceanic Engineering, 16
R. Guza, E. Thornton (1980)
Local and shoaled comparisons of sea surface elevations, pressures, and velocitiesJournal of Geophysical Research, 85
H. Tennekes, J. Lumley (1972)
A First Course in Turbulence
Y. Agrawal, D. Aubrey (1992)
Velocity observations above a rippled bed using laser Doppler velocimetryJournal of Geophysical Research, 97
J. Trowbridge, W. Geyer, C. Butman, R. Chapman (1989)
The 17-Meter Flume at the Coastal Research Laboratory. Part 2. Flow Characteristics
C. Clay, H. Medwin (1977)
Acoustical Oceanography : Principles and Applications
N. Kraus, A. Lohrmann, R. Cabrera (1994)
New Acoustic Meter for Measuring 3D Laboratory FlowsJournal of Hydraulic Engineering, 120
W. George, J. Lumley (1973)
The laser-Doppler velocimeter and its application to the measurement of turbulenceJournal of Fluid Mechanics, 60
G. Voulgaris, M. Wilkin, M. Collins (1995)
The in situ passive acoustic measurement of shingle movement under waves and currents: instrument (TOSCA) development and preliminary resultsContinental Shelf Research, 15
P. Buchhave, W. George, J. Lumley (1979)
The Measurement of Turbulence with the Laser-Doppler AnemometerAnnual Review of Fluid Mechanics, 11
H. Nakagawa, I. Nezu (1977)
Prediction of the contributions to the Reynolds stress from bursting events in open-channel flowsJournal of Fluid Mechanics, 80
R. Lhermitte, U. Lemmin (1994)
Open-Channel Flow and Turbulence Measurement by High-Resolution Doppler SonarJournal of Atmospheric and Oceanic Technology, 11
Y. Agrawal, C. Belting (1988)
Laser velocimetry for benthic sediment transport, 35
K. Miller, M. Rochwarger (1972)
A covariance approach to spectral moment estimationIEEE Trans. Inf. Theory, 18
A. Lohrmann, R. Cabrera, N. Kraus (1994)
Acoustic-Doppler Velocimeter (ADV) for Laboratory Use
I. Nezu, W. Rodi (1986)
Open‐channel Flow Measurements with a Laser Doppler AnemometerJournal of Hydraulic Engineering, 112
Accuracy of the acoustic Doppler velocimeter (ADV) is evaluated in this paper. Simultaneous measurements of open-channel flow were undertaken in a 17-m flume using an ADV and a laser Doppler velocimeter. Flow velocity records obtained by both instruments are used for estimating the true (““ground truth””) flow characteristics and the noise variances encountered during the experimental runs. The measured values are compared with estimates of the true flow characteristics and values of variance (〈〈 u ′′ 2 〉〉, 〈〈 w ′′ 2 〉〉) and covariance (〈〈 u ′′ w ′′〉〉) predicted by semiempirical models for open-channel flow. The analysis showed that the ADV sensor can measure mean velocity and Reynolds stress within 1% of the estimated true value. Mean velocities can be obtained at distances less than 1 cm from the boundary, whereas Reynolds stress values obtained at elevations greater than 3 cm above the bottom exhibit a variation that is in agreement with the predictions of the semiempirical models. Closer to the boundary, the measured Reynolds stresses deviate from those predicted by the model, probably due to the size of the ADV sample volume. Turbulence spectra computed using the ADV records agree with theoretical spectra after corrections are applied for the spatial averaging due to the size of the sample volume and a noise floor. The noise variance in ADV velocity records consists of two terms. One is related to the electronic circuitry of the sensor and its ability to resolve phase differences, whereas the second is flow related. The latter noise component dominates at rapid flows. The error in flow measurements due to the former noise term depends on sensor velocity range setting and ranges from ±±0.95 to ±±3.0 mm s −−1 . Noise due to shear within the sample volume and to Doppler broadening is primarily a function of the turbulence dissipation parameter. Noise variances calculated using spectral analysis and the results of the ground truthing technique are compared with theoretical estimates of noise.
Journal of Atmospheric and Oceanic Technology – American Meteorological Society
Published: Jul 31, 1996
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