Research Article
Jan 1919
Pressures in Penstock Caused by the Gradual Closing of Turbine Gates
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VIEW THE REPLYPublication: Transactions of the American Society of Civil Engineers
Volume 83, Issue 1
Abstract
This paper shows how the rise of pressure caused by the gradual closing of turbine gates may be determined from Professor Joukovsky's theory of maximum water-hammer. A solution of the problem by the trial-and-error method of arithmetic integration is first given, and then formulas are derived that cover any governor time and any relation between governor stroke and gate movement. Two factors which affect the rise of pressure are taken into consideration: (1) the elasticity of water and of the walls of the penstock; and (2) the effect of the net head on the phenomena which occur during the closing of the gates. Previous writers have submitted formulas which neglect one or other of these two factors, with the result that they do not give correct results in all cases. The limitations of such formulas are determined by the solution of the problem herein submitted.
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© 1919 American Society of Civil Engineers.
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Published in print: Jan 1919
Published online: Feb 10, 2021
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Norman R. Gibson, M.ASCE
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