Please use this identifier to cite or link to this item: http://ir.futminna.edu.ng:8080/jspui/handle/123456789/6220
Title: Experimental investigation of the characteristics of the transition from spherical cap bubble to slug flow in a vertical pipe
Authors: Abdulkadir, Mukhtar
Ugwoke, Blessing
Zhao, Donglin
Abdulkareem, Lokman
Hernandez–Perez, Valente
Keywords: Air–silicone oil
DP cell
ECT
slug flow
Spherical cap bubble
Transition
WMS
Issue Date: 1-Jun-2021
Publisher: Experimental Thermal and Fluid Science (ELSEVIER)
Citation: 0
Abstract: Reliable and accurate prediction of the transition from spherical cap bubble to slug flow is crucial not only to the operation of industrial facilities such as the crude oil pipelines, bubble column, and nuclear reactors but also for model development for computational fluid dynamics (CFD) studies. The present paper presents a review of the transition mechanics from spherical cap bubble flow to slug flow in vertical pipes. The bubble flow was split into sub-regions, bubbles and spherical cap bubbles and the mechanisms to classify them (i.e., bubble terminal velocity and cap bubble velocity) was analysed. For now, the literature review does not present some important previous works. This paper presents an original data set of gas–silicone oil in vertical pipes to support the new findings. The experimental two-phase data classifies the flow patterns using the probability density function (PDF) and shows the important flow variables such as average void fraction, pressure gradient, slug body void fraction, liquid slug, Taylor bubble and slug unit lengths, structural velocity and frequency obtained by electrical capacitance tomography (ECT) and a wire mesh sensor (WMS).
URI: http://repository.futminna.edu.ng:8080/jspui/handle/123456789/6220
ISSN: 08941777
Appears in Collections:Chemical Engineering

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