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

This article contains the results of experimental studies of 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 from a progressing turbulent flow within Reynolds numbers (Re = 4700–19,500). Base...

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Bibliographic Details
Published in:Applied sciences 2020-12, Vol.10 (23), p.8503
Main Author: Mrowiec, Andrzej
Format: Article
Language:English
Subjects:
Design
Discharge coefficient
experimental studies
Flow characteristics
Flow velocity
Fluid dynamics
Fluid flow
Fluid mechanics
Hydraulics
International standardization
Laboratories
measurement uncertainty analysis
Measuring instruments
multi-opening orifice
Orifices
Pipelines
Pressure transducers
Reynolds number
Thermal expansion
Turbulent flow
Uncertainty analysis
volume flow
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Summary:This article contains the results of experimental studies of 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 from a progressing turbulent flow within Reynolds numbers (Re = 4700–19,500). Based on conducted experimental data, flow characteristics, and 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 to 0.68 dm3/s, based on rules from the GUM international standard. The value, determined from uncertainty analysis, did not exceed 1.25% within the changes of Reynolds numbers 9800 ≤ Re ≤ 19,500.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10238503