Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Porous Media Flows"”.
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Parallel analytico-computational methods for multicomponent media : application to thermal composites and porous-media flows
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Experimental investigation of the effects of upstream perturbations in the near-wall and core of a high porosity random-wire porous medium.
Experiments were conducted on a high-porosity porous medium to investigate the influences of upstream perturbations. The porous medium was fabricated by stacking stainless steel wire-mesh screens in a container of circular cross-section. A step change in porosity is considered a perturbation to the …
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Understanding the evolution of miscible viscous fingering patterns
… viscosity fluid, creates complex patterns in porous media flows. Fundamental facets of the displacement process, such as volumetric sweep and mixing efficiency, depend strongly on the type of pattern created by the uneven front of the less viscous fluid. The interface created from these …
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Inverse problems in fluid dynamics for magnetic resonance velocimetry
… the method can successfully reconstruct noisy flows in realistic geometries and high Reynolds numbers. Further, the method naturally extends to 3D periodic and unsteady flows, and its computational complexity can be substantially decreased if an adaptive discretisation method (e.g. wavelets) is …
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Flow through porous media : from mixing of fluids to triggering of earthquakes
… In this Dissertation, we study flow through porous media in two different contexts: effect of viscosity on mixing of fluids, and triggering of earthquakes due to coupling between flow and deformation. We show that miscible viscous fingering-the hydrodynamic instability that arises when a less …
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Numerical studies of Newtonian and viscoelastic fluids
… behavior of Newtonian and viscoelastic fluids in porous materials, four-to-one contraction and the flow of a Newtonian fluid past an airfoil. In simulations the viscoelastic fluid is modeled by the finitely extensible nonlinear elastic (FENE) dumbbell and Oldroyd-B models. The finite element …