Dispersion model for interceptional and diffusional collection of fine particles in fibrous beds. A comparison with experiments

TY - JOUR

T1 - Dispersion model for interceptional and diffusional collection of fine particles in fibrous beds. A comparison with experiments

AU - Shapiro, Michael

AU - Kettner, Itzchak J.

AU - Brenner, Howard

N1 - Funding Information: This work was supported by and the U.S. Army Research Office (Contract No. DAAL03-87-K-0128). M. Shapiro acknowledges the support of the Basic Research Foundation administered by the Israel Academy of Science and Humanities

PY - 1990

Y1 - 1990

N2 - Characteristic filtration lengths of fibrous filters collecting spherical submicrometer aerosol particles are calculated over a wide range of particle sizes and filtration operating parameters. The calculations were based upon the dispersion/reaction model for aerosol transport and filtration in porous filters, and were performed for spatially periodic models of fibrous arrays of circular cylinders in square arrays. Several orientations of the direction of mean air flow relative to the lattice axes were investigated. A comparison between our theoretical results, available experimental data, and the results of competitive filtration models, demonstrated the greater accuracy of our dispersion/reaction model in correlating characteristic filtration lengths of submicrometer particles possessing diameters less than 0.3-0.5 μm. The filtration rate of larger particles, governed primarily by the interception mechanism, is shown to be sensitive to the choice of the direction of the mean air flow relative to the axes of the periodic array.

AB - Characteristic filtration lengths of fibrous filters collecting spherical submicrometer aerosol particles are calculated over a wide range of particle sizes and filtration operating parameters. The calculations were based upon the dispersion/reaction model for aerosol transport and filtration in porous filters, and were performed for spatially periodic models of fibrous arrays of circular cylinders in square arrays. Several orientations of the direction of mean air flow relative to the lattice axes were investigated. A comparison between our theoretical results, available experimental data, and the results of competitive filtration models, demonstrated the greater accuracy of our dispersion/reaction model in correlating characteristic filtration lengths of submicrometer particles possessing diameters less than 0.3-0.5 μm. The filtration rate of larger particles, governed primarily by the interception mechanism, is shown to be sensitive to the choice of the direction of the mean air flow relative to the axes of the periodic array.

KW - Aerosol particles

KW - characteristic filtration length

KW - deposition

KW - diffusion

KW - filtration

KW - interception

UR - http://www.scopus.com/inward/record.url?scp=0025597684&partnerID=8YFLogxK

U2 - 10.1016/0021-8502(90)90342-U

DO - 10.1016/0021-8502(90)90342-U

M3 - 文章

AN - SCOPUS:0025597684

SN - 0021-8502

VL - 21

SP - S715-S718

JO - Journal of Aerosol Science

JF - Journal of Aerosol Science

IS - SUPPL. 1

ER -