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Internals In Gas-Liquid Systems, Sai Sankar Ganesan
Internals In Gas-Liquid Systems, Sai Sankar Ganesan
LSU Doctoral Dissertations
The objective of this study is to model gas-liquid contact and separation problems (using Euler-Euler based Computational Fluid Dynamic (CFD) models) at different scales. We have explored process intensive solutions, design optimizations by introducing internals in these gas-liquid operations.
A 500L pilot plant scale and a 7000L industrial scale novel down-flow bubble column problems were modeled. Methodologies used to overcome challenges on large-bubble micro-bubble dynamics are discussed and the resulting fluid dynamic solutions were studied. These solutions were further modified and tailored toward intensification, by exploring horizontal plate internals. We then modeled mass transfer and reaction kinetics on this system …
Applications Of Computational Models On Studying Particulate Systems, Jielin Yu
Applications Of Computational Models On Studying Particulate Systems, Jielin Yu
LSU Doctoral Dissertations
Particulate systems have been widely studied because of its various phenomena and tight relationship with industry applications. In this dissertation, two types of computational models have been adopted to study two problems with different particulate systems: granular self-organization inside a cylinder driven by an orbital-shaker and the optimal design of bypass line for an industrial-scale 8‑leg polyolefin loop reactor.
In the first study, behavior of both single particle and multiple particles in a rotating cylinder has been modeled by discrete element method (DEM) to understand the mechanism of granular self-organization. Sets of studies have then been performed to study the …
Mobility Of Nano-Particles In Rock Based Micro-Models, Jagannath Upadhyay
Mobility Of Nano-Particles In Rock Based Micro-Models, Jagannath Upadhyay
LSU Doctoral Dissertations
A confocal micro-particle image velocimetry (C-μPIV) technique along with associated post-processing algorithms is detailed for obtaining three dimensional distributions of nano-particle velocity and concentrations at select locations of the 2.5D (pseudo 3D) Poly(methyl methacrylate) (PMMA) and ceramic micro-model. The designed and fabricated 2.5D micro-model incorporates microchannel networks with 3D wall structures with one at observation wall which resembles fourteen morphological and flow parameters to those of fully 3D actual reservoir rock (Boise Sandstone) at resolutions of 5 and 10 μm in depth and 5 and 25 μm on plane. In addition, an in-situ, non-destructive method for measuring the geometry of …