2016-2017

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Browsing 2016-2017 by Author "Fernandes, Ignatius"

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    Lattice Boltzmann Simulation of Forced Convection in Non-Newtonian Fluid Through Low Permeable Porous Media
    (2016) Fernandes, Ignatius
    Numerical simulation is carried out to study forced convection in non-Newtonian fluids flowing through low permeable porous media like sandstones and sand. Simulation is carried out using lattice Boltzmann method for both shear-thinning and shear-thickening, by varying the power-law index from 0.5 to 1.5 in Carreau-Yasuda model. Parameters involved in lattice Boltzmann method and Carreau model are identified to achieve numerical convergence. Permeability and porosity are varied in the range of 10 10
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    NUMERICAL SIMULATION OF FORCED CONVECTION IN OIL SANDS USING LATTICE BOLTZMANN METHOD
    (2016) Fernandes, Ignatius
    Lattice Boltzmann method is used to simulate forced convection in oilsands (low permeable porous geometries). Fluid flows through a sandstone look alike square geometry with left wall of the geometry kept at higher temperature compared to other walls. Investigation is carried out to study influence of increased temperature on flow properties by observing the variation in velocity and temperature profiles for various permeability and porosity values, which were varied to match the geometrical properties of oil sands. Boundary conditions and the relaxation parameter are suitably defined to achieve convergence for low values of permeability. Simulation was carried out at low Reynolds number, which however, can be extended to higher values of Reynolds number