Effect of Misalignment of Penstocks on Head Loss
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 8, Issue 4
Abstract
A penstock is a conduit which is normally used to convey water from a reservoir to hydraulic turbines. It is made by joining a number of pieces of pipe whose proper alignments are essential to minimize the flow disturbances and hydraulic losses. This paper experimentally investigates the effect of misalignment of two pipes of the same diameter on hydraulic losses at five different Reynolds numbers ranging from to . The diametric misalignment between the two pieces of mild steel penstock of inner diameter 342 mm is varied from 2 to 10 mm in steps of 2 mm. There is a loss of pressure head at the location of mismatch of the diameters, which increases with increase in misalignment and Reynolds number.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 8 • Issue 4 • November 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Oct 23, 2015
Accepted: Feb 3, 2017
Published online: May 10, 2017
Discussion open until: Oct 10, 2017
Published in print: Nov 1, 2017
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