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Fall 2024
Understanding the dynamics of injecting fluids into porous media is essential for enhancing the reliability of subsurface storage/sequestration of fuels such as hydrogen or combustion byproducts such as carbon dioxide. In either case, significant progress has been made overcoming a variety of...
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Experimental and theoretical investigation of mass transport in porous media of a PEM fuel cell
DownloadFall 2011
Porous media is an integral part of polymer electrolyte fuel cell (PEMFC) electrodes. In this study, an experimental setup is presented to investigate convective and diffusive mass transport in porous media of fuel cell electrodes. A new theoretical model was developed in order to correct for...
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Fall 2016
Drawing on ideas from turbulent plume theory, a novel solution is presented for buoyant convection from an isolated source in uniform and non-uniform porous media of finite extents. In the former case, the problem is divided into three flow regimes: (i) a negatively-buoyant plume, (ii)...
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Spring 2015
Aiming to pursue studying enhanced oil recovery processes with an ex-situ produced emulsion as flooding agent, an improved core flooding experimental system was designed, constructed and commissioned. The developed system allows the use of not only emulsion, but also other flooding agents,...
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Fall 2012
Quantification of transport properties at pore scale is important for efficient oil extraction, improving fuel cell performance etc. An experimental methodology is developed for calculating permeability and porosity in microfluidic devices that contain structured and unstructured porous media....
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Spring 2016
Heterogeneous materials are omnipresent in several critical engineering applications such as polymer electrolyte fuel cells (PEFCs), coal bio-conversion process, geological storage of CO2 and membrane water filtration. These applications rely on physical processes such as transport (e.g., mass,...
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Spring 2022
This thesis research concerns controlling viscous fingering instability when a less-viscous fluid pushes another more-viscous one in a porous medium. This instability is called the Saffman-Taylor instability and has been extensively studied, primarily for simple Newtonian fluids. The resultant of...
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Spring 2017
We examine the transient evolution of a negatively buoyant, laminar plume in an emptying filling box containing a uniform porous medium. In the long time limit, τ→∞, the box is partitioned into two uniform layers of different densities. However, the approach towards steady state is characterized...