Ammar Zeghloul
Experimental investigation of the vertical upward single and two-phase flow pressure drops through gate and ball valves
Zeghloul, Ammar; Bouyahiaoui, Hiba; Azzi, Abdelwahid; Hasan, Abbas; Al-sarkhi, Abdelsalam
Authors
Abstract
This paper presents an experimental investigation of the pressure drop through valves in vertical upward flows. Experiments were carried out using a 1¼" (DN 32) ball and a gate valve. Five opening areas have been investigated from fully open to the nearly fully closed valve, using air with a superficial velocity of (0-3.5 m/s) and water (0.05-0.91 m/s). These ranges cover single-phase and the bubbly, slug and churn two-phase flow regimes. It was found that for the single-phase flow experiments, the valve coefficient increases with the valve opening and is the same, in both valves, for the openings smaller than 40%. The single-phase pressure drop increases with the liquid flowrate and decreases with the opening area. The two-phase flow pressure drop was found considerably increased by reducing the opening area for both valves. It reaches its maximum values at 20% opening for the ball valve and 19% opening for the gate valve. It was also inferred that at fully opening condition, the two-phase flow multiplier, for both valves, has been found close to unity for most of the tested flow conditions. For the 40 and 20 % valve openings the two-phase multiplier decreases in the power-law with liquid holdup for the studied flow conditions. Models proposed originally for evaluating the pressure drop through an orifice in single-phase and two-phase flows were also applied and assessed in the present experimental data.
Citation
Zeghloul, A., Bouyahiaoui, H., Azzi, A., Hasan, A., & Al-sarkhi, A. (2020). Experimental investigation of the vertical upward single and two-phase flow pressure drops through gate and ball valves. Journal of Fluids Engineering, 142(2), Article FE-19-1329. https://doi.org/10.1115/1.4044833
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 1, 2019 |
Online Publication Date | Oct 4, 2019 |
Publication Date | 2020-02 |
Deposit Date | Sep 23, 2019 |
Publicly Available Date | Oct 5, 2020 |
Journal | Journal of fluids engineering |
Print ISSN | 0098-2202 |
Electronic ISSN | 1528-901X |
Publisher | American Society of Mechanical Engineers |
Peer Reviewed | Peer Reviewed |
Volume | 142 |
Issue | 2 |
Article Number | FE-19-1329 |
DOI | https://doi.org/10.1115/1.4044833 |
Keywords | Gates (Closures); Pressure drop; Two-phase flow; Valves; Flow (Dynamics); Slug flows; Water |
Public URL | https://hull-repository.worktribe.com/output/2741081 |
Publisher URL | https://asmedigitalcollection.asme.org/fluidsengineering/article-abstract/doi/10.1115/1.4044833/975522/Experimental-investigation-of-the-vertical-upward?redirectedFrom=fulltext |
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