A Study on Measurement Uncertainty of a Vortex Flow Meter in Discrete Liquid Phase

Abstract:

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The measurement uncertainty of vortex flowmeter was examined when the gas flow measured was injected with liquid. This test was performed in a multiphase flow calibration facility. A vortex flowmeter of 50 mm in diameter was installed in a 100 mm test section. The gas volume flow rate was held in 141m3/h and the liquid was injected into the gas flow. The liquid volume fractions used at the gas volume flow rate were 0.0106%, 0.0213%,0.0355%,0.0496%,0.0638%,0.0780% and 0.0922%. The small amount of liquid in the gas as discrete droplet is called discrete liquid phase. Analysis on the vortex shedding frequency obtained from a frequency spectra showed that the strouhal values changed from 0.305 to 0.385 with the discrete liquid phase increasing and the total uncertainty of vortex flowmeter was from 0.869% to 2.196%. The experimental result can supply experimental basis for the measurement error correction of vortex flowmeter worked in gas flow with discrete liquid phase.

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Periodical:

Edited by:

Wensong Hu

Pages:

593-599

DOI:

10.4028/www.scientific.net/AMR.346.593

Citation:

Y. F. Jia and D. R. Kong, "A Study on Measurement Uncertainty of a Vortex Flow Meter in Discrete Liquid Phase", Advanced Materials Research, Vol. 346, pp. 593-599, 2012

Online since:

September 2011

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$35.00

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