Year: 2019
Type: article
Abstract: We investigate the stability of radial viscous fingering (VF) in miscible fluids. We show that the instability is determined by an interplay between advection and diffusion during the initial stages of flow. Using linear stability analysis and nonlinear simulations, we demonstrate that this competition is a function of the radius is established. Finally, the results are validated by performing experiments that provide good qualitative agreement with our numerical study. Implications for observations in oil recovery and other fingering instabilities are discussed.
Source: Journal of Fluid Mechanics
DOI: 10.1017/jfm.2019.932
Authors: Vandita Sharma, Sada Nand, Satyajit Pramanik, Ching-Yao Chen, Manoranjan Mishra
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2992611940