|Statement||by Antonius Laenen and R.E. Curtis, Jr. ; prepared in cooperation with the South Florida Water Management District.|
|Series||Water-resources investigations report / U.S. Geological Survey -- 89-4090., Water-resources investigations report -- 89-4090.|
|Contributions||Curtis, R. E. 1934-, South Florida Water Management District., Geological Survey (U.S.)|
|The Physical Object|
|Pagination||iv, 15 p. :|
|Number of Pages||15|
Laenen, Antonius, and R.E. Curtis, Jr. , "Accuracy of Acoustic Velocity Metering Systems for Measurement of Low Velocity in Open Channels," US Geological . Accuracy of acoustic velocity metering systems for measurement of low velocity in open channels Laenen, A., and Curtis, Jr., R.E., U.S. Geological Survey Water-Resources Investigations Report 89– Acoustic velocity meter systems: Laenen, Antonius, Accuracy of acoustic velocity metering systems for measurement of low velocity in open channels / (Tallahassee, Fla.: Dept. of the Interior, U.S. Geological Survey ; Denver, Colo.: Books and Open-File Reports, Flow measurement in open channels and closed conduits. accuracy of acoustic velocity metering systems for measurement of low velocity in open channels By Antonius Laenen and R.E. Curtis, Jr. U.S. GEOLOGICAL .
Water exchange between canals and surrounding aquifer and wetlands in the Southern Everglades, USA. Accuracy of acoustic velocity. metering systems for measurement of low velocity in open. Using the depth and width measurements for calculating the area and the velocity measurements, the discharge is computed by the ADCP using discharge = area x velocity, similar to the conventional current-meter method. Acoustic velocity meters have also been developed for making wading measurements (picture to the left). Subcritical Contraction Design for Improved Open Channel Flow Measurement Accuracy with an Upward-Looking Acoustic Doppler Velocity Meter ITRC Paper No. P Table 4. Laenen, A., Curtis Jr., R.E., Accuracy of acoustic velocity metering systems for measurement of low velocity in open channels. US Geological Survey Water Resources Investigations Report 89 Cited by:
To avoid confusion, the terms flow and velocity will be used in this text. Flow is the quantity of fluid per unit time (e.g., gallons per day), whereas velocity is a distance over unit time (e.g., feet per second). Flow Measurement Systems A flow measurement system is required to obtain continuous flow data. Sonar flowmeters have the capacity of measuring the velocity of liquids or gases non-intrusively within the pipe and then leverage this velocity measurement into a flow rate by using the cross-sectional area of the pipe and the line pressure and temperature. The principle behind this flow measurement is the use of underwater acoustics. Flow Measuring Flumes for Open Channel Systems, pp. New York: John Wiley & Sons or republication () by American Society of Agricultural Engineers. [This book on open channel flow metering contains detailed instructions for constructing long-throated flumes or broad-crested weirs. A computer program is included] Bureau of Reclamation. Flow through a large penstock such as used at a hydroelectric power plant can be measured by averaging the flow velocity over the entire area. Propeller-type current meters (similar to the purely mechanical Ekman current meter, but now with electronic data acquisition) can be traversed over the area of the penstock and velocities averaged to calculate total flow.