Numerical investigation of immiscible Liquid-Liquid displacement in Hele-Shaw cell. (2021)

• Record Type: Journal Article
• Authors: Singh, Akhileshwar; Pandey, Krishna Murari; Singh, Yogesh
• Is Part Of: Materials today. Volume 45:Part 7(2021)
• Page Start: 7151
• Page End: 7155
• Publication Date: 2021
• Subjects: Numerical simulation -- Immiscible displacement flow -- Hele-Shaw cell -- VOF model -- Sweep efficiency; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2021.02.151
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: In the present work, a numerical simulation has been performed on the immiscible liquid–liquid displacement flow in two- dimensional rectilinear Hele-Shaw cell (HSC) by using ANSYS FLUENT commercial software. The volume of fluid (VOF) model has been used to track the interface of immiscible liquids in the displacement flow process. A finger shape instability records at the oil–water interface when a large viscous liquid oil is displaced by lower viscous liquid water from the oil-saturated Hele-Shaw cell. This finger shape interfacial instability is called viscous fingering. The viscosity ratio (ratio of the viscosity of displacing and displaced liquids) of two-phase flow is less than unity then unstable displacement occurs and results in finger shape instability appears at the interface. The numerical simulation of two-phase flow has been performed by using the pressure base solver and transient model. The present work aims to capture the propagation of a finger shape instability at the oil–water interface and calculate the sweep efficiency by image processing. We observed that water displaces approximately 72.42% of oil from the entire oil-saturated HSC and sweep efficiency gradually increases with time in the displacement process.