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Open Access

ARTICLE

A New Device for Gas-Liquid Flow Measurements Relying on Forced Annular Flow

Tiantian Yu1, Youping Lv1, Hao Zhong2, Ming Liu1, Pingyuan Gai1, Zeju Jiang1, Peng Zhang1, Xingkai Zhang2,*
1 Petroleum Engineering Technology Research Institute, SINOPEC Shengli Oilfield Company, Dongying, 257000, China
2 School of Petroleum Engineering, Yangtze University, Wuhan, 430100, China
* Corresponding Author: Xingkai Zhang. Email: email

Fluid Dynamics & Materials Processing https://doi.org/10.32604/fdmp.2024.049035

Received 25 December 2023; Accepted 27 February 2024; Published online 24 April 2024

Abstract

A new measurement device, consisting of swirling blades and capsule-shaped throttling elements, is proposed in this study to eliminate typical measurement errors caused by complex flow patterns in gas-liquid flow. The swirling blades are used to transform the complex flow pattern into a forced annular flow. Drawing on the research of existing blockage flow meters and also exploiting the single-phase flow measurement theory, a formula is introduced to measure the phase-separated flow of gas and liquid. The formula requires the pressure ratio, Lockhart-Martinelli number (L-M number), and the gas phase Froude number. The unknown parameters appearing in the formula are fitted through numerical simulation using computational fluid dynamics (CFD), which involves a comprehensive analysis of the flow field inside the device from multiple perspectives, and takes into account the influence of pressure fluctuations. Finally, the measurement model is validated through an experimental error analysis. The results demonstrate that the measurement error can be maintained within ±8% for various flow patterns, including stratified flow, bubble flow, and wave flow.

Keywords

Gas-liquid flow measurement; blocking flowmeter; measurement model; pressure fluctuations; numerical simulation; experimental control

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