Application of density-viscosity in predicting oil-water flow profile in horizontal pipe
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Vol. 2, No. 4, 2020, 00–00 https://doi.org/10.1007/s42757-020-0070-6
Application of density–viscosity in predicting oil–water flow profile in horizontal pipe Nuhu Ayuba (), Rafael de Borba Buhler, Luciano Silva da Silva, Toni Jefferson Lopes Universidade Federal do Rio Grande - FURG, Barão do Cahy avenue, Cidade Alta, Santo Antonio da Patrulha Campus, Postal code 95500-000, Brazil
Abstract
Keywords
In this article, the commercial software COMSOL multiphysics 5.0 was used to model and simulate 2D core annular flow (CAF) between oil and water flow in a horizontal pipe. The objective was to obtain the flow volume, velocity, shear rate, and pressure profiles of nine
2D core annular flow (CAF)
different kinds of oils (ranging from heavy to light) found in published articles, and explain them using density–viscosity magnitudes. Interestingly, those magnitudes and their application in describing multiphase volume pressure, velocity were the main novelties of this paper. Thus, the
multiphase flow
magnitudes were calculated through multiplying the densities of oils by their respective viscosities. However, for convenience, dimensionless forms of these magnitudes were also calculated through further division of oil density–viscosity magnitudes by that of water. Using
Article History
those magnitudes, it was possible to explain the numerical results of flow volume, velocity, shear
Accepted: 16 April 2020
rate, and pressure profiles obtained in this article. Notably, analyses of the results showed that larger magnitudes (above 500, using the dimensionless magnitude) produce core annular flows
Research Article
(CAF), while lower magnitudes (below 10 using the dimensionless magnitude) produce other
© Tsinghua University Press 2020
two-phase laminar Level-set density–viscosity magnitude two-phase numerical study
Received: 29 December 2019 Revised: 7 April 2020
flow profiles (such as dispersed, slug, and plug). The numerical study was carried out using two-phase laminar Level-set method, which was successfully validated by reproducing volume, velocity, pressure, and shear stress (product of shear rate and viscosity) profiles that were found in two published articles.
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Introduction
As reported in many articles, multiphase flow of oil–water is relevant in petroleum, petrochemical, power generation, and nuclear reaction industries (Lovick and Angeli, 2004; Amooey and Mazandaran, 2016; Jiang et al., 2016; Shi et al., 2017). In petroleum industries, for example, multiphase flow studies of oil and water are applied in the projection of water lubricated pipelines (Trallero et al., 1997) for the transportation of heavy crude (Rodriguez and Oliemans, 2006). To this end, understanding oil–water multiphase flow can help in developing predictive models for projecting flow equipment (Al-Wahaibi et al., 2014) and improving the performance of separating facilities. The application of oil–water flow in heavy crude transportation helps in reducing large pressure drops caused by high oil viscosities (Joseph et al., 1997; Burl
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