Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Procedure for flow regime identification of dispersed bubbles in a gas-liquid mixture flowing in vertical pipes
Submission Author:
Luiz Eduardo Melo Lima , PR
Co-Authors:
Guilherme Marodin Assis, Luiz Eduardo Melo Lima
Presenter: Luiz Eduardo Melo Lima
doi://10.26678/ABCM.COBEM2017.COB17-1971
Abstract
Gas-liquid flows are encountered in many industrial applications such as in petroleum industry, where a gas-oil mixture is transported through pipes from the well to the separation and processing facilities. The dispersed flow is one of several gas-liquid flow patterns frequently found in this industrial application. Depending on the dispersed flow regime (viscous, distorted or turbulent), the flow characteristics change significantly, influencing the gas velocity and, therefore, changing the gas fraction along the pipe cross-sections. The goal of this work is to propose a solution procedure for flow regime identification and consequently obtain the main characteristics of the dispersed flow. The solution procedure was implemented in a computational code written in Fortran 95 programming language. For results analysis, it was developed a computational code using Gnuplot tool commands to generate a flow patterns map, which was used to verify the occurrence of the dispersed flow regimes. This analysis considered different work fluids as well as different pipe diameters. The results analysis showed that the solution procedure captures the dispersed flow regimes with a satisfactory precision, despite the differences encountered due to the variation of the properties of the fluids and pipe diameter in the analyzed cases.
Keywords
Two-phase Flow, Dispersed flow, Bubbles mean diameter, Flow regime, Flow map
