Alex C. Hoffmann

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Some aspects of the use of order parameter fields in molecular dynamics simulations to delimit solid phases containing water, namely ice and hydrate, in both hydrophilic and hydrophobic fluids are examined; this includes the influences of rectangular meshes and of filtering on the quality of these parameters. Three order parameters are studied: the mass(More)
Applied Mathematics and Computation The present work is a study of the gas-flow phenomenon known as the ?end of the vortex? (EoV), which spontaneously occurs at the lower end, or under, reverse-flow centrifugal separators such as cyclones or swirl tubes. Different CFD models of swirl tubes have been built to study and analyse this phenomenon in detail. The(More)
In this paper we study stochastic models for the transport of particles in a uidized bed reactor, and compute the associated residence time distribution (RTD). Our main model is basically a diiusion process in 0; A] with reeecting/absorbing boundary conditions, modiied by allowing jumps to the origin as a result of transport of particles in the wake of(More)
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