Suppressing viscous fingering in structured porous media
نویسندگان
چکیده
منابع مشابه
From Capillary Fingering to Viscous Flow in Two-Dimensional Porous Media: Role of the Wetting Properties
Microfluidics device are used to study the drainage of a wetting fluid by a non-wetting one in porous media. Both the geometry and the wetting properties are accurately controlled and allow to obtain quantitative measurements of the features of the capillary fingering occuring during the invasion as a function of the imposed flow rate. In partial wetting systems, a quantitative agreement is fou...
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Fluid mixing plays a fundamental role in many natural and engineered processes, including groundwater flows in porous media, enhanced oil recovery, and microfluidic lab-on-a-chip systems. Recent developments have explored the effect of viscosity contrast on mixing, suggesting that the unstable displacement of fluids with different viscosities, or viscous fingering, provides a powerful mechanism...
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The nonmodal linear stability of miscible viscous fingering in a two-dimensional homogeneous porous medium has been investigated. The linearized perturbed equations for Darcy's law coupled with a convection-diffusion equation is discretized using a finite difference method. The resultant initial value problem is solved by a fourth-order Runge-Kutta method, followed by a singular value decomposi...
متن کاملModeling of Radial Source Flow in Porous Media: Miscible Viscous Fingering Patterns
Introduction: Viscous fingering, a hydrodynamic instability characterized by complex patterns, is observed when a less viscous fluid displaces a more viscous one in porous medium [1]. The displacement is either rectilinear or radial; both having equal importance in many real life applications. The fingering patterns in radial Hele-Shaw flows have been studied both experimentally [2], and numeri...
متن کاملApplication of POD and DEIM on Dimension Reduction of Nonlinear Miscible Viscous Fingering in Porous Media
A Discrete Empirical Interpolation Method (DEIM) is applied in conjunction with Proper Orthogonal Decomposition (POD) to construct a nonlinear reduced-order model of finite difference discretized system used in the simulation of nonlinear miscible viscous fingering in a 2-D porous medium. POD is first applied to extract a low-dimensional basis that optimally captures the dominant characteristic...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2018
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1800729115