Graduate Thesis Or Dissertation
 

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

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/6t053k199

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  • 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 the mass transfer in both single phase and multiple phase cases, making the model very versatile. To validate the model, analysis was performed at three levels: the component level, the phase level, and the systems level. At the component level, the accuracy of the mass and momentum transfer in the model was determined analytically and verified numerically. At the phase level, the chemical equilibrium and interface behavior in multiphase fluids was analyzed. Finally, at the systems level, the model was used to simulate a multiphase separations device used in the production of biodiesel.
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