Experimental investigation of the characteristics of the transition from spherical cap bubble to slug flow in a vertical pipe
Journal article
Abdulkadir, M., Ugwoke, B., Abdulkareem, L., Zhao, D. and Hernandez-Perez, V. (2021). Experimental investigation of the characteristics of the transition from spherical cap bubble to slug flow in a vertical pipe. Experimental Thermal and Fluid Science. https://doi.org/10.1016/j.expthermflusci.2021.110349
| Authors | Abdulkadir, M., Ugwoke, B., Abdulkareem, L., Zhao, D. and Hernandez-Perez, V. |
|---|---|
| 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). |
| Keywords | Air–silicone oil; ECT; WMS; DP cell; Spherical cap bubble; Slug flow; transition |
| Year | 2021 |
| Journal | Experimental Thermal and Fluid Science |
| Publisher | Elsevier |
| ISSN | 08941777 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.expthermflusci.2021.110349 |
| Publication dates | |
| 06 Feb 2021 | |
| Publication process dates | |
| Deposited | 08 Feb 2021 |
| Accepted | 10 Jan 2021 |
| Accepted author manuscript | License File Access Level Open |
| Page range | 110349 |
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