Research Article
Mar 1964
Flow Measurement with a Suspension Wire
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 90, Issue 2
Abstract
A flow measuring device based on the drag developed on a wire suspend transverse to the flow of water has been developed. The wire is suspended between a fixed support and an elastic support, with the wire deflection registered by a semiconductor strain gage incorporated at the elastic end. The gage formed part of a Wheatstone bridge circuit with a sensitive galvanometer and d-c amplifier recorder. The basic operating principle was studied in series of tests with the wire completely traversing a 2 in. diameter closed conduit and then the 11 in. dimension of a 11 in. by 5-1/2 in. closed circuit water tunnel, together with wire types varying from 0.001 in. to 0.0071 in. in diameter of different materials. A probe with a wire length of the order of 1 in. extended the work for open-channel flows. Velocity distributions have been determined within a wire diameter of the channel floor. The dynamic response of the probe in the vortex wake of a fixed cylinder and stability in sediment load also were investigated.
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Published In
Journal of the Hydraulics Division
Volume 90 • Issue 2 • March 1964
Pages: 37 - 53
Copyright
© 1964 American Society of Civil Engineers.
History
Published in print: Mar 1964
Published online: Feb 3, 2021
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Authors
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Bruce B. Sharp
Senior Lecturer in Civ. Engrg., Univ. of Melbourne, Victoria, Australia
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