By Michael Reader-Harris
This publication offers the historical past to differential-pressure circulate dimension and is going in the course of the standards explaining the cause of them. in case you are looking to use an orifice plate or a Venturi tube the traditional ISO 5167 and its linked Technical reviews provide the directions required. although, they infrequently inform the clients why they need to stick with definite directions. This publication is helping clients of the ISO criteria for orifice plates and Venturi tubes to appreciate the explanations why the factors are as they're, to use them successfully, and to appreciate the results of deviations from the factors.
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Additional info for Orifice Plates and Venturi Tubes (Experimental Fluid Mechanics)
Sample text
About 1904 Thomas R. , to make a comparison between orifice plates and Pitot tubes. This work was interrupted and not completed till 1911. Hodgson (1917) commenced research on orifice flow measurement in 1909 and published his work in 1917; he records that the first orifice used for steam-flow measurement that was furnished to him came from Holbrook Gaskell of the United Alkali Company in 1910. 10 History 19 Fig. , for the 17′ 0″ Venturi meters, Catskill Aqueduct, New York water supply [photograph and caption from Kent (1912)] Fig.
Mattingly, R. Norman, M. Reader-Harris, J. Reid, J. Sattary, W. Seidl, C. Sindt, E. Spearman, E. Spencer, K. Starling, J. Stolz, J. Stuart, W. Studzinski, R. Teyssandier, P. –P. Vallet, K. West, J. Whetstone, P. Wilcox, and A. Willemse. Details of how orifice-plate discharge-coefficient equations were derived and of those in use today are given in Chap. 5. Some history is also included in Chap. 12 on standards. In parallel with collecting data on the discharge coefficient in good flow conditions, data were taken on the effect of upstream installation on the discharge coefficient.
1992a). In addition to experimental work, computational work has been undertaken to compute the flow through differential-pressure meters: early studies included those of Mattingly and Davis (1977) and Mills (1968). Examples of theoretical work are Hall (1959) and Halmi (1973c). Theoretical work has helped to explain the experimental data, but experimental work has always been required to determine actual values for inclusion in standards. A: Sextus Julius Frontinus Probably the first person to describe flow measurement in closed pipes using a method whose descendant is that codified in modern differential-pressure standards was Sextus Julius Frontinus.