Simple model for deep bed filtration

Deep Bed Filtration: Modelling Theory and Practice

A Network Model for Deep Bed Filtration of Solid Particles and Emulsion Drops

A network model has been developed to simulate the flow of emulsions and solid particles through porous media. Particle deposition due to direct interception, as well pore plugging by straining are accounted for in the model. The effects of two important factors-the ratio of particle size to pore size, and the fluid velocity-on particle deposition are also investigated. The strength of the mode...

Effect of Filter Inhomogeneity on Deep-Bed Filtration Process – A CFD Investigation

Aerosol filtration in fibrous filters is one of the principal methods of removal of solid particles from the gas stream. The classical theory of depth filtration is based on the assumption of existing single fiber efficiency, which may be used to the recalculation of the overall efficiency of the entire filter. There are several reasons for inappropriate estimation of the single fi...

A Simple General-purpose I-V Model for All Operating Modes of Deep Submicron MOSFETs

A simple general-purpose I-V model for all operating modes of deep-submicron MOSFETs is presented. Considering the most dominant short channel effects with simple equations including few extra parameters, a reasonable trade-off between simplicity and accuracy is established. To further improve the accuracy, model parameters are optimized over various channel widths and full range of operating v...

A Simple Physical Model for Deep Moonquakes

Introduction: Deep moonquakes occur between ~750 and 1000 km depth in the Moon and originate at discrete source regions referred to as numbered " clusters. " Occurrence times of events from individual clusters are clearly related to tidal stress [1-8], but also exhibit departures from the temporal regularity this relationship would seem to imply. The physical process that results in moonquakes ...