Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Uncertainty Assessment for Determining the Discharge Coefficient C for a Multi-Opening Orifice

Version 1 : Received: 5 November 2020 / Approved: 6 November 2020 / Online: 6 November 2020 (15:06:27 CET)

How to cite: Mrowiec, A. Uncertainty Assessment for Determining the Discharge Coefficient C for a Multi-Opening Orifice. Preprints 2020, 2020110244 (doi: 10.20944/preprints202011.0244.v1). Mrowiec, A. Uncertainty Assessment for Determining the Discharge Coefficient C for a Multi-Opening Orifice. Preprints 2020, 2020110244 (doi: 10.20944/preprints202011.0244.v1).

Abstract

The article contains the results of experimental studies for a multi-opening orifice with substitute constriction factor of β = 0.5 (m = 0.25), mounted in a DN50 hydraulic measuring flume. Flow measurements were taken for a progressing turbulent flow within Reynolds numbers (Re = 4700...19500). Based on experimental data, flow characteristics as well as discharge coefficient C characteristics were determined. Relative expanded uncertainty of determining a discharge coefficient C was estimated within the changes of volume flow qv from 0.35 dm3/s to 0.68 dm3/s. The value does not exceed 1.25% within the changes of Reynolds numbers 9800 ≤ Re ≤ 19500.

Subject Areas

volume flow; multi-opening orifice; experimental studies; measurement uncertainty analysis

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