Analytical prediction of particle detachment from a flat surface by turbulent air flows

Detachment of deposited particles in turbulent air flows has been theoretically investigated, based on a quasi-static, critical moment model. Micrometer and submicrometer particles were considered in this study. Forces, i.e. adhesion, gravitation, aerodynamic lift and drag, and moments of these forc...

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Main Authors: Nakorn Tippayawong, Ittichai Preechawuttipong
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/49692
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-496922018-09-04T04:29:47Z Analytical prediction of particle detachment from a flat surface by turbulent air flows Nakorn Tippayawong Ittichai Preechawuttipong Biochemistry, Genetics and Molecular Biology Chemistry Materials Science Mathematics Physics and Astronomy Detachment of deposited particles in turbulent air flows has been theoretically investigated, based on a quasi-static, critical moment model. Micrometer and submicrometer particles were considered in this study. Forces, i.e. adhesion, gravitation, aerodynamic lift and drag, and moments of these forces acting on particles deposited to a surface were considered and calculated as a function of particle size, and particle/surface system. Critical velocities of air flows for particle detachment were determined, and compared with experimental results from literature. The analytical prediction and experimental data were found to be in reasonable agreement. Trends between the two were similar. The analytical solutions predicted that the effect of aerodynamic drag played an important role in removal of fine particles from the surface. Critical velocity was found to increase with a decrease in particle size. 2018-09-04T04:05:35Z 2018-09-04T04:05:35Z 2011-08-22 Journal 01252526 2-s2.0-80051761868 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80051761868&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/49692
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Biochemistry, Genetics and Molecular Biology
Chemistry
Materials Science
Mathematics
Physics and Astronomy
spellingShingle Biochemistry, Genetics and Molecular Biology
Chemistry
Materials Science
Mathematics
Physics and Astronomy
Nakorn Tippayawong
Ittichai Preechawuttipong
Analytical prediction of particle detachment from a flat surface by turbulent air flows
description Detachment of deposited particles in turbulent air flows has been theoretically investigated, based on a quasi-static, critical moment model. Micrometer and submicrometer particles were considered in this study. Forces, i.e. adhesion, gravitation, aerodynamic lift and drag, and moments of these forces acting on particles deposited to a surface were considered and calculated as a function of particle size, and particle/surface system. Critical velocities of air flows for particle detachment were determined, and compared with experimental results from literature. The analytical prediction and experimental data were found to be in reasonable agreement. Trends between the two were similar. The analytical solutions predicted that the effect of aerodynamic drag played an important role in removal of fine particles from the surface. Critical velocity was found to increase with a decrease in particle size.
format Journal
author Nakorn Tippayawong
Ittichai Preechawuttipong
author_facet Nakorn Tippayawong
Ittichai Preechawuttipong
author_sort Nakorn Tippayawong
title Analytical prediction of particle detachment from a flat surface by turbulent air flows
title_short Analytical prediction of particle detachment from a flat surface by turbulent air flows
title_full Analytical prediction of particle detachment from a flat surface by turbulent air flows
title_fullStr Analytical prediction of particle detachment from a flat surface by turbulent air flows
title_full_unstemmed Analytical prediction of particle detachment from a flat surface by turbulent air flows
title_sort analytical prediction of particle detachment from a flat surface by turbulent air flows
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80051761868&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/49692
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