Optimizing the ASME Venturi Recovery Cone Angle to Minimize Head Loss
Publication: Journal of Hydraulic Engineering
Volume 144, Issue 1
Abstract
Many flow-meter applications require accurate flow measurement (0.5% of actual flow or better), whereas other applications accept less-accurate flow measurements. Some applications attempt to minimize head loss, whereas a few applications have ample energy such that a flow meter with higher head loss is preferred. In many instances where highly accurate flow measurement and low head loss are required, Venturi flow meters are a viable option. The accuracy of a Venturi for flow measurement is well established and well documented; however, the design of recovery cones and their associated head loss is not. This study uses computational fluid dynamics and laboratory data to demonstrate the relationship between recovery cone angle on the classical Venturi meter design and associated head loss. Results from this study show that the optimum recovery cone angle to minimize head loss is a function of beta ratio and Reynolds number. Whereas Venturi codes provide ranges of acceptable cone angles, this research provides the optimal recovery cone angle to minimize permanent pressure loss.
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Published In
Journal of Hydraulic Engineering
Volume 144 • Issue 1 • January 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Aug 8, 2016
Accepted: Jun 9, 2017
Published online: Nov 10, 2017
Published in print: Jan 1, 2018
Discussion open until: Apr 10, 2018
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