Basic errors of Coriolis flowmeters in liquid-gas two-phase flow

Xiao-Zhang ZHANG

Abstract

Liquid-Gas two-phase flow causes measurement error in Coriolis flow meters. The topic has been studied by researchers including working out mathematical models, doing real flow tests in laboratories or industry.In this paper, we study the ‘bubble model’ again, which is often referred to in two-phase flow model for Coriolis flow meters. Using the concept of Archimedes buoyant principle, we obtain a different result from Landau’s for acceleration ratio of a sphere bubble in a vibrating ideal fluid. Thus measurement error model of two-phase flow for Coriolis flow meters is re-discussed. On the other hand, data of flowrate measurement errors abstracted from a number of references are plotted. It was found that most of the data falling within a region of between, which is in agreement with the theory deduced in this paper.

Keywords

Multiphase flow; Coriolis flowmeter; Measurement error

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IMEKO-TC9-2019-010.pdf

DOI

10.21014/tc9-2022.010

IMEKO TC

TC9 - Flow Measurement

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