Autor según el artículo: Benhmidene A; Chaouachi B; Bourouis M; Gabsi S
Departamento: Enginyeria Mecànica
Autor/es de la URV: Bourouis Chebata, Mahmoud
Palabras clave: 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
Resumen: 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.
Áreas temáticas: Mechanical engineering Engineering, mechanical Engenharias iii
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: mahmoud.bourouis@urv.cat
Identificador del autor: 0000-0003-2476-5967
Fecha de alta del registro: 2023-02-19
Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
Referencia al articulo segun fuente origial: Journal Of Fluids Engineering-Transactions Of The Asme. 133 (3):
Referencia 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 Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2011
Tipo de publicación: Journal Publications
Repositori URV