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Filtering by: Creator Wildenschild, D. Remove constraint Creator: Wildenschild, D. Subject Transport theory Remove constraint Subject: Transport theory

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  • Steady-State Diffusion in a Spatially Varying Porous Medium

    Creator:
    Ferrero, Peter T.
    Abstract:
    Heterogeneous porous material represents a persistent challenge in the field of engineering. Microscale properties such as the porosity and microchannel torturosity significantly control the macroscale transport characteristics of homogeneous porous medium. Additional complexity is introduced when these small-scale features vary in space. Examples of heterogeneous porous systems include artificial body...
    Resource Type:
    Masters Thesis
    Full Text:
    Diffusion in a Spatially Varying Porous Medium Abstract approved: Brian D. Wood Heterogeneous porous

  • Investigation of transport phenomena in a highly heterogeneous porous medium

    Creator:
    Vogler, Daniel
    Abstract:
    This work focuses on solute mass transport in a highly heterogeneous two-region porous medium consisting of spherical low-hydraulic conductivity inclusions, embedded in a high-hydraulic conductivity matrix. The transport processes occuring in the system are described by three distinct time scales. The first time scale reflects the characteristic time for convective...
    Resource Type:
    Masters Thesis
    Full Text:
    Phenomena in a Highly Heterogeneous Porous Medium Abstract approved: Brian D. Wood This work focuses on

  • Problems of Shape and Information in Multiscale Modeling of Transport Phenomena

    Creator:
    Ostvar, Sassan
    Abstract:
    This work is a compilation of problems that deal with multiscale analysis of transport phenomena in environmental systems. A common feature among the problems studied here is the presence of non-negligible microscale structure in various forms. Each problem is approached from the perspective that a macroscopic observable encodes aspects of...
    Resource Type:
    Dissertation
    Full Text:
    D. Wood This work is a compilation of problems that deal with multiscale analysis of transport

  • A novel lattice Boltzmann method for treatment of multicomponent convection, diffusion, and reaction phenomena in multiphase systems

    Creator:
    Parker, James Muirhead
    Abstract:
    In this work, a multicomponent lattice Boltzmann model is developed for the simulation of multiphase mixing, reactions, and separations processes. This model is unique in that diffusive mass transfer of a component in the model is driven by gradients of chemical potential. This fundamentally correct description of diffusion accurately captures...
    Resource Type:
    Dissertation
    Full Text:
    Relaxation rate for moments 1 through 9 λD Diffusive relaxation rate µi Chemical potential of species i