A Data-Driven Predictor of the Discharge Coefficient of Orifice Plates

Published

April 1, 2015

Author(s)

James R. Whetstone, Antonio M. Possolo

Abstract

We have developed a new functional relationship to predict the value of the discharge coefficient of an orifice plate used to measure volumetric flow rate in cylindrical pipes, as a function of the beta ratio of the orifice and pipe combination, and of the Reynolds number of the flow. This relationship is empirical, resulting from fitting a data-driven universal approximant to a large collection of experimental data gathered at the National Institute of Standards and Technology during the 1980s, within the scope of a collaborative project with the American Petroleum Institute (API), and published as NIST Technical Note 1264. The performance of this new relationship compares favorably with the conventional Reader-Harris/Gallagher equation originally developed for the American Gas Association (AGA), and it is more widely applicable, achieving typical relative accuracy in the range of 0.05 % to 0.2 %.

Conference Dates

April 14-17, 2015

Conference Location

Washington DC, WA

Conference Title

9th International Symposium on Fluid Flow Measurement (ISFFM 2015)

Pub Type

Conferences

Keywords

9th International Symposium on Fluid Flow Measurement (ISFFM 2015) Flow measurement, Orifice plate, Reader-Harris/Gallagher equation, Projection Pursuit Regression.

Citation

Whetstone, J. and Possolo, A. (2015), A Data-Driven Predictor of the Discharge Coefficient of Orifice Plates, 9th International Symposium on Fluid Flow Measurement (ISFFM 2015) , Washington DC, WA (Accessed April 26, 2024)