Collection Efficiency of Rectangular Slit-Nozzle Inertial Impactors with Impaction Plates of Elliptical Concave Curvature
- Title
- Collection Efficiency of Rectangular Slit-Nozzle Inertial Impactors with Impaction Plates of Elliptical Concave Curvature
- Author
- 육세진
- Keywords
- Rectangular Slit-Nozzle; Collection Efficiency; Elliptical Concave Curvature
- Issue Date
- 2013-01
- Publisher
- TAYLOR & FRANCIS INC
- Citation
- AEROSOL SCIENCE AND TECHNOLOGY, 2013, 47(1), P.99-105
- Abstract
- In this study, the impaction plate with an elliptical concave groove was employed in an effort to enhance the collection efficiency of the slit-nozzle inertial impactor. The major axis length (A) and the minor axis length (B) of the elliptical concave curvature were varied. The effect of the ratio of A to B on the collection efficiency of slit-nozzle inertial impactors was investigated both numerically and experimentally. The numerical results were in good agreement with the experimental data for different values of A/B ratio. The elliptical concave impaction plates were useful in not only reducing the particle bounce but also lowering the cut-off size. The optimum range of the A/B ratio was found to exist for minimizing the cut-off size. When the elliptical concave impaction plates with the A/B ratio of 2 were used for the slit-nozzle inertial impactors, the square-root of the Stokes number was estimated to be lowered from 0.77 to approximately 0.6, resulting in the decrease of the cut-off size by 22% compared with the typical flat impaction plates.
- URI
- http://www.tandfonline.com/doi/abs/10.1080/02786826.2012.730162http://hdl.handle.net/20.500.11754/41444
- ISSN
- 0278-6826
- DOI
- 10.1080/02786826.2012.730162
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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