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Title: The Discharge Coefficient And Through-Life Performance Of Venturi Tubes
Author: D Hodges, M.J. Reader-Harris, N. Barton,W.C. Brunton, J.J. Gibson
Source: 2000 North Sea Flow Measurement Workshop
Year Published: 2000
Abstract: Until recently it was generally assumed that the discharge coefficient of a Venturi tube is constant provided that the pipe Reynolds number is greater. However, recent work has shown the problems with this view. The work of Jamieson et al 1 and of van Weers et al 2 has shown that the performance of Venturi tubes in gas is very different from that in water. This paper describes experimental work carried out on new Venturi tubes in water and dry gas and gives a partial explanation of the behaviour of the discharge coefficient in gas. This work was supported by the National Measurement System Policy Unit of the Department of Trade and Industry.

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