Author, as appears in the article.: Bouyahiaoui, Hiba; Saidj, Faiza; Arabi, Abderraouf; Al-Sarkhi, Abdelsalam; Azzi, Abdelwahid
Department: Enginyeria Mecànica
URV's Author/s: Arabi, Abderraouf
Abstract: Using an air-water mixture and 34 mm ID pipe, a series of pressure drop and void fraction measurements were collected. The observed flow regimes were falling film, annular, bubbly, cap bubble, slug, and churn flows. The temporal fluctuations of void fraction and pressure drop measurements were firstly studied using signals visualization and PDF. It was revealed that both signals can be used to identify the flow regimes. A new flow pattern map is proposed based on the Froude number, calculated using the mixture velocity of the two phases, and the ratio of gas-to-liquid superficial velocities. The behaviors of the total and frictional pressure drops were studied and the influence of the superficial velocities as well as the flow regimes were identified. The experimental results were compared to four existing vertically downward frictional pressure drop models, none of which provided accurate predictions.
Thematic Areas: Physics and astronomy (miscellaneous) Physics and astronomy (all) Mechanics Mechanical engineering Matemática / probabilidade e estatística General physics and astronomy Fluid flow and transfer processes Engenharias iv Engenharias iii Engenharias ii Ciência de alimentos Ciência da computação Biodiversidade
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: abderraouf.arabi@urv.cat
Record's date: 2024-09-21
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0301932223003312
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: International Journal Of Multiphase Flow. 172 104711-
APA: Bouyahiaoui, Hiba; Saidj, Faiza; Arabi, Abderraouf; Al-Sarkhi, Abdelsalam; Azzi, Abdelwahid (2024). Vertically downward gas-liquid flow: Void fraction and pressure drop. International Journal Of Multiphase Flow, 172(), 104711-. DOI: 10.1016/j.ijmultiphaseflow.2023.104711
Article's DOI: 10.1016/j.ijmultiphaseflow.2023.104711
Entity: Universitat Rovira i Virgili
Journal publication year: 2024
Publication Type: Journal Publications
Repositori URV