期刊
AEROSOL SCIENCE AND TECHNOLOGY
卷 48, 期 5, 页码 508-514出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/02786826.2014.896989
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资金
- NSERC through a Collaborative Health Research Projects (CHRP) grant
An in vitro study was conducted in the Alberta idealized child mouth-throat, which mimics average deposition in a set of nine 6-14-year-old subjects, to examine the enhancement of deposition of monodisperse uniformly charged particles as a result of induced electrostatic forces. A purpose-based atomizer was designed and built for generating monodisperse, uniformly charged particles. The atomizer generates droplets by jet break up under the action of capillary waves and charges them via electrostatic induction. The experiments cover different particle aerodynamic diameters (d (a) = 3.6, 4.4, and 5.9 mu m), at two flow rates (Q = 10 and 20 L/min), over a wide range of elementary charges per particle (0-10,000 e). The results show substantial increases in particle deposition in the present idealized pediatric mouth throat compared to neutral aerosols. Two empirical equations, as a function of Reynolds number, Stokes number, and induced charge number are introduced for the prediction of mouth-throat deposition in children, based on two different characteristic diameters of the airway. Copyright 2014 American Association for Aerosol Research
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