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|Title:||Some aspects of flow-induced vibrations of hydraulic control gates|
|Authors:||Iowa Institute of Hydraulic Research.|
Locher, Frederick A.
|Publisher:||Hydraulics Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Contract report (U.S. Army Engineer Waterways Experiment Station) ; H-69-1.|
From the Introduction: Abrupt spatial changes in boundary form are common features in many hydraulic structures. Considerable attention has been focused on those cases in which a free shear layer is present in the flow field, since distressing and sometimes catastrophic flow-induced vibrations have resulted from the interaction of the free-shear layer and the structure. Practical examples involving flow-induced vibration include the singing of turbine blades and ship propellers, the galloping of power transmission lines, the buffetting of one of a row of smokestacks, and the vibration of high-head gates in dams and outlet works. Although these illustrations seem unrelated, one factor is common to all: a free shear layer is associated with the flow in each case, and is one of the primary factors in providing a means by which basic flow instabilities ultimately manifest themselves as flow-induced structural vibrations. The last example, high-head gates in dams and outlet works, has been the principal concern of the present investigation. NOTE: This file is large. Allow your browser several minutes to download the file.
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