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Title of Journal: J Mech Sci Technol

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Abbravation: Journal of Mechanical Science and Technology

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Korean Society of Mechanical Engineers

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DOI

10.1007/bf01249752

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1976-3824

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Stochastic analysis of a collection process of sub

Authors: Jonggeun Bang Woongsup Yoon
Publish Date: 2014/09/20
Volume: 28, Issue: 9, Pages: 3719-3732
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Abstract

Flow effects on the collection of submicron particles by a single fiber are investigated by stochastic analysis of the particle deposition evolution The incident particleladen stream is simulated by a LagrangianEulerian approach while the flows around a fiber and particles accumulation are solved using the Lattice Boltzmann method in conjunction with Brownian dynamics to trace the trajectory of randomly moving particles A boundary surface on the fiber also evolves to include the changing morphology due to particle deposition The simulation method is validated for collection efficiencies and pressure drop of clean fiber Brownian effects on particle accumulation were examined in terms of the Peclet number Predictions of evolving particlelayered filter geometry showed a strong effect of carriergas convection on the extent and the morphology of the particle accumulation which in turn affected the morphology of the filter This strong interaction between the carriergas convection and the filter membrane causes more active particle accumulation and thus at all Peclet numbers examined with carriergas convection yielded higher collection efficiencies but with a higher pressure drop

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