Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
A SLUG FLOW MODEL WITH CONCAVE INTERFACE FOR GAS-LIQUID FLOW IN HORIZONTAL PIPES
Submission Author:
Michael Anthony Mendes , RJ , Brazil
Co-Authors:
Michael Anthony Mendes, Gabriel Caetano Gomes Ribeiro da Silva, Su Jian
Presenter: Michael Anthony Mendes
doi://10.26678/ABCM.COBEM2023.COB2023-1108
Abstract
Two-phase slug flows are commonly found in a wide range of industrial applications such as in oil and gas extraction, processing and distribution, in power plants, chemical plants, etc. In this work, the mechanistic model of Orell (2005) for gas-liquid slug flow in horizontal pipes has been reformulated. Instead of a flat gas-liquid interface for the film region in the original model, the reformulated model considers the concavity of the interface by a double-circle model. This work investigated the capacity of the proposed model to predict the pressure drop and liquid holdup, employing five correlations for the interfacial friction factor, compared to the original model. It was observed that, particularly for gas-liquid slug flows with higher superficial gas velocities and lower liquid holdups, the proposed model predicted the pressure drop more accurately compared to the conventional flat interface model. The liquid holdup predicted by the model was considerably more accurate compared to the model of Orell (2005) for the air-water system. While, for the air-oil system, the model predicted the liquid holdup more accurately than the model of Orell (2005) only for lower values of gas superficial flow rate.
Keywords
Slug Flow, double-circle model, horizontal flow, two-phase pressure drop
