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Full-Text Articles in Engineering
Single-Collector Experiments And Modeling Of Acoustically Aided Mesh Filtration, Michael T. Grossner, Donald L. Feke, Joanne M. Belovich
Single-Collector Experiments And Modeling Of Acoustically Aided Mesh Filtration, Michael T. Grossner, Donald L. Feke, Joanne M. Belovich
Chemical & Biomedical Engineering Faculty Publications
A model for the motion of particles driven by acoustic and hydrodynamic effects in the vicinity of a cylindrical collector has been previously reported. This trajectory model was developed to describe the essential physics that underlies an ultrasonically aided particle-filtration process in which a porous mesh is used to capture particles two orders of magnitude smaller than the pore size. To validate this trajectory model, experiments were performed to elucidate the detailed motion of particles in the neighborhood of a single cylindrical collector. Images of 54-μm-diameter polystyrene particles in aqueous suspension responding to acoustic and hydrodynamic forces were …
Transport Analysis And Model For The Performance Of An Ultrasonically Enhanced Filtration Process, Michael T. Grossner, Joanne M. Belovich, Donald L. Feke
Transport Analysis And Model For The Performance Of An Ultrasonically Enhanced Filtration Process, Michael T. Grossner, Joanne M. Belovich, Donald L. Feke
Chemical & Biomedical Engineering Faculty Publications
This paper presents an analysis of a filtration technique that uses ultrasound to aid the collection of small particles (tens of microns in diameter) from suspension. In this method, particles are retained within a porous mesh that is subjected to a resonant ultrasonic field, even though the pore size of the mesh is two orders of magnitude greater than the particle diameter. The role of acoustic forces in driving the retention phenomena has previously been studied on a micro-scale, which included modeling and experimental verification of particle motion and trapping near a single element of the mesh. Here, we build …
Single Fiber Model Of Particle Retention In An Acoustically Driven Porous Mesh, Michael T. Grossner, Alan E. Penrod, Joanne M. Belovich, Donald L. Feke
Single Fiber Model Of Particle Retention In An Acoustically Driven Porous Mesh, Michael T. Grossner, Alan E. Penrod, Joanne M. Belovich, Donald L. Feke
Chemical & Biomedical Engineering Faculty Publications
A method for the capture of small particles (tens of microns in diameter) from a continuously flowing suspension has recently been reported. This technique relies on a standing acoustic wave resonating in a rectangular chamber filled with a high-porosity mesh. Particles are retained in this chamber via a complex interaction between the acoustic field and the porous mesh. Although the mesh has a pore size two orders of magnitude larger than the particle diameter, collection efficiencies of 90% have been measured. A mathematical model has been developed to understand the experimentally observed phenomena and to be able to predict filtration …