Autor segons l'article: Benhmidene A; Chaouachi B; Bourouis M; Gabsi S
Departament: Enginyeria Mecànica
Autor/s de la URV: Bourouis Chebata, Mahmoud
Paraules clau: Void fraction profiles Void fraction Vertical 2-phase flow Vapors Vapor velocities Two phase flow Two fluid model Tubes (components) Tubes Tube length Tube diameters Transition Thermodynamic properties System Simulation Pumps Pump performance Numerical predictions Liquids Liquid velocities Heat flux Gas-liquid flow Forecasting Flow simulation Flow regimes Flow patterns Flow pattern Constant heat flux Churn flow Channels Bubble pump Binary-mixtures Ammonia water 2-fluid model
Resum: In the present study, the ammonia-water mixing flow in a bubble pump is numerically simulated. The flow patterns of a two-phase flow in a bubble pump were studied under different conditions of heat flux and tube diameter. A one-dimensional two-fluid model was developed under constant heat flux. This model was used to predict the variations in void fraction and liquid and vapor velocities throughout the tube. Then, the void fraction profile and the curve of liquid velocity versus vapor velocity were used to predict the flow patterns along the tube length. It was found that at heat fluxes below 15 kW m -2, bubbly, slug, and churn flows are the dominating regimes, and the length of these flow regimes depends on the tube diameter. For heat fluxes higher than 15 kW m-2, the bubble pump operates under the churn and annular regimes, and the bubble pump performance is improved when the tube diameter increases. © 2011 American Society of Mechanical Engineers.
Àrees temàtiques: Mechanical engineering Engineering, mechanical Engenharias iii
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: mahmoud.bourouis@urv.cat
Identificador de l'autor: 0000-0003-2476-5967
Data d'alta del registre: 2023-02-19
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Referència a l'article segons font original: Journal Of Fluids Engineering-Transactions Of The Asme. 133 (3):
Referència de l'ítem segons les normes APA: Benhmidene A; Chaouachi B; Bourouis M; Gabsi S (2011). Numerical prediction of flow patterns in bubble pumps. Journal Of Fluids Engineering-Transactions Of The Asme, 133(3), -. DOI: 10.1115/1.4003664
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2011
Tipus de publicació: Journal Publications
Repositori URV