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The impaction of spherical particles on circular cylinders Griffin, Frank Owen
Abstract
Inertial and interceptive .impaction of spherical particles on circular cylinders was investigated theoretically. The particles were considered to be suspended in a fluid moving steadily through a random array of parallel cylinders. Fluid flowfields around the cylinders were obtained by numerically solving the Navier-Stokes Equation subject to Kuwabara's zero vorticity boundary condition. These solutions were subsequently utilized in calculating particle trajectories and impaction efficiencies. The latter are presented as functions of Reynolds number (0.2 ≤ Rec ≤ 40), particle inertial parameter (0 ≤ P ≤ 1000), particle to cylinder size ratio (0.001 ≤ K ≤ 1.) and cylinder concentration (10 ̄⁴ ≤ c ≤ 0.111). The impaction efficiencies and critical inertial parameters differ significantly from earlier theoretical predictions. The discrepancies are primarily attributable to the inaccurate flowfield representations used by previous authors. The agreement between Subramanyam and Kuloor's experimental work and present theory is satisfactory.
Item Metadata
Title |
The impaction of spherical particles on circular cylinders
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1972
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Description |
Inertial and interceptive .impaction of spherical particles on circular cylinders was investigated theoretically. The particles were considered to be suspended in a fluid moving steadily through a random array of parallel cylinders.
Fluid flowfields around the cylinders were obtained by numerically solving the Navier-Stokes Equation subject to Kuwabara's zero vorticity boundary condition. These solutions were subsequently utilized in calculating particle trajectories and impaction efficiencies. The latter are presented as functions of Reynolds number (0.2 ≤ Rec ≤ 40), particle inertial parameter (0 ≤ P ≤ 1000), particle to cylinder size ratio (0.001 ≤ K ≤ 1.) and cylinder concentration (10 ̄⁴ ≤ c ≤ 0.111).
The impaction efficiencies and critical inertial parameters differ significantly from earlier theoretical predictions. The discrepancies are primarily attributable to the inaccurate flowfield representations used by previous authors. The agreement between Subramanyam and Kuloor's experimental work and present theory is satisfactory.
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Type | |
Language |
eng
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Date Available |
2011-04-06
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0059180
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URI | |
Degree | |
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Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.