Research Article
Jun 1975
Fluid-Dynamic Excitation Involving Flow Instability
Publication: Journal of the Hydraulics Division
Volume 101, Issue 6
Abstract
Most flow-induced structural vibrations can be traced to shear-layer instability. They are generated by feedback mechanisms through which disturbances to the free shear layer are self-generated and amplified with an inherent dominant frequency and pressure fluctuations are produced over any portion of the body surface near the free shear layer. The range of flow conditions within which such vibrations may occur for given mechanical and geometrical properties of the structure is predicted by means of a kinematic analysis based on some results of stability theory and experiments. Verification of the validity of the analysis is provided by a comparision with tests for a typical hydraulic structure: a high-head gate with downstream lip. The results give support to the general applicability of this method for the determination of flow conditions under which structural vibrations can be excited.
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Published In
Journal of the Hydraulics Division
Volume 101 • Issue 6 • June 1975
Pages: 681 - 698
Copyright
© 1975 American Society of Civil Engineers.
History
Published in print: Jun 1975
Published online: Feb 3, 2021
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Authors
Affiliations
Wallace W. Martin
Asst. Prof., Dept. of Mech. Engrg., Univ. of Toronto Toronto, Canada; formerly, Research Assoc., Inst. of Hydromechanics, Univ. of Karlsruhe, Karlsruhe, Germany
Eduard Naudascher, F.ASCE
Prof. of Civ. Engrg. and Dir., Inst. of Hydromechanics, Univ. of Karlsruhe, Karlsruhe, Germany
Mahadevan Padmanabhan
Grad. Student, School of Civ. Engrg., Georgia Inst. of Tech., Atlanta, Ga.; formerly, Research Asst., Inst. of Hydromechanics, Univ. of Karlsruhe, Karlsruhe, Germany
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.