Item – Theses Canada

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OCLC number
795624213
Author
Nabovati, Aydin,1980-
Title
Pore level simulation of single and two phase flow in porous media using lattice Boltzmann method.
Degree
Ph. D. -- University of New Brunswick, 2009
Publisher
Ottawa : Library and Archives Canada = Bibliothèque et Archives Canada, [2012]
Description
3 microfiches
Notes
Includes bibliographical references.
Abstract
<?Pub Inc> Single and multiphase fluid flow in porous media is simulated using the single relaxation time lattice Boltzmann method. The mesoscopic nature of the lattice Boltzmann method along with the easy implementation of the solid wall boundary condition make this approach a powerful tool for the pore level fluid flow simulation in porous media. Due to its mesoscopic nature, the LBM enables its use in both the macroscopic and microscopic flow simulations, where the conventional CFD methods based on the Navier Stokes equations require some modifications. Fluid flow analyses for porous media are of great importance in a wide range of industrial applications including, but not limited to, resin transfer moulding, filter analysis, transport of underground water and pollutants, and hydrocarbon recovery. Permeability is perhaps the most important property that characterizes porous media; however, its determination for different types of porous media is challenging due its complex dependence on the pore level structure of the media. In the present work, single phase fluid flow in two and three dimensional porous media of different pore structures is simulated using the lattice Boltzmann method; the predicted permeability for various types of porous media is presented and effect of the structural parameters on the predicted permeability are studied in detail. Multiphase flow simulations (for single component and multicomponent systems) are also performed and the mesoscale phenomena in multiphase flow are investigated, namely: phase separation, surface tension, and solid-fluid interaction. Simulation of the filling process for 2D media is also presented. The results obtained for the flow in porous media and the general relationship proposed for the permeability have the advantage of being readily available to be used in macroscopic flow modelling approaches for industrial applications, e.g. the Resin Transfer Moulding process, where the pore level approach is not viable due to the large requirements in terms of computational resources.
ISBN
9780494744833
0494744839