Mechanisms responsible for sub-micron particle deposition in a laminar wall jet
(2002) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 211(2-3). p.133-144- Abstract
- An experimental study was performed to investigate the dependency of particle size on the deposition rate. Polystyrene latex particles of two radii (0.23 and 0.38 mum) were deposited onto a glass surface covered with indium-tin oxide. Reduced deposition efficiency was observed for the larger particles, although an increase in the deposition efficiency was seen as that the diffusion boundary layer became thicker. A critical degree of surface coverage, Brit, was defined as the fraction of surface coverage at which the linear variation of flux with time ended. When the two particle sizes were compared, it was found that the value of Brit depended only on the wall shear stress. This result indicates that surface shielding is an important... (More)
- An experimental study was performed to investigate the dependency of particle size on the deposition rate. Polystyrene latex particles of two radii (0.23 and 0.38 mum) were deposited onto a glass surface covered with indium-tin oxide. Reduced deposition efficiency was observed for the larger particles, although an increase in the deposition efficiency was seen as that the diffusion boundary layer became thicker. A critical degree of surface coverage, Brit, was defined as the fraction of surface coverage at which the linear variation of flux with time ended. When the two particle sizes were compared, it was found that the value of Brit depended only on the wall shear stress. This result indicates that surface shielding is an important factor in the decline in particle flux. The deposition process was divided into two separate processes, described by a mass-transfer coefficient and an adhesion rate coefficient. It was found that the process was governed by mass-transfer during the initial period, but for higher degrees of surface coverage adhesion became the rate-determining factor. (C) 2002 Elsevier Science B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/321797
- author
- Göransson, Anders LU and Trägårdh, Christian LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- deposition efficiency, wall-jet, particle deposition, shielding
- in
- Colloids and Surfaces A: Physicochemical and Engineering Aspects
- volume
- 211
- issue
- 2-3
- pages
- 133 - 144
- publisher
- Elsevier
- external identifiers
-
- wos:000179710100004
- scopus:0037015939
- ISSN
- 0927-7757
- DOI
- 10.1016/S0927-7757(02)00259-5
- language
- English
- LU publication?
- yes
- id
- 88a475ab-888b-4f9c-9c03-1d259e99f25a (old id 321797)
- date added to LUP
- 2016-04-01 16:10:36
- date last changed
- 2023-09-04 13:48:52
@article{88a475ab-888b-4f9c-9c03-1d259e99f25a,
abstract = {{An experimental study was performed to investigate the dependency of particle size on the deposition rate. Polystyrene latex particles of two radii (0.23 and 0.38 mum) were deposited onto a glass surface covered with indium-tin oxide. Reduced deposition efficiency was observed for the larger particles, although an increase in the deposition efficiency was seen as that the diffusion boundary layer became thicker. A critical degree of surface coverage, Brit, was defined as the fraction of surface coverage at which the linear variation of flux with time ended. When the two particle sizes were compared, it was found that the value of Brit depended only on the wall shear stress. This result indicates that surface shielding is an important factor in the decline in particle flux. The deposition process was divided into two separate processes, described by a mass-transfer coefficient and an adhesion rate coefficient. It was found that the process was governed by mass-transfer during the initial period, but for higher degrees of surface coverage adhesion became the rate-determining factor. (C) 2002 Elsevier Science B.V. All rights reserved.}},
author = {{Göransson, Anders and Trägårdh, Christian}},
issn = {{0927-7757}},
keywords = {{deposition efficiency; wall-jet; particle deposition; shielding}},
language = {{eng}},
number = {{2-3}},
pages = {{133--144}},
publisher = {{Elsevier}},
series = {{Colloids and Surfaces A: Physicochemical and Engineering Aspects}},
title = {{Mechanisms responsible for sub-micron particle deposition in a laminar wall jet}},
url = {{http://dx.doi.org/10.1016/S0927-7757(02)00259-5}},
doi = {{10.1016/S0927-7757(02)00259-5}},
volume = {{211}},
year = {{2002}},
}