Multi-scale transport modeling - Asbestos and nano fibers in inhalation risk assessments

Tian, L, Ahmadi, G and Tu, J 2017, 'Multi-scale transport modeling - Asbestos and nano fibers in inhalation risk assessments', in Proceedings of the ASME Fluids Engineering Division Summer Meeting (FEDSM2017), Waikoloa, Hawaii, 30 July - 3 August 2017, pp. 1-6.


Document type: Conference Paper
Collection: Conference Papers

Title Multi-scale transport modeling - Asbestos and nano fibers in inhalation risk assessments
Author(s) Tian, L
Ahmadi, G
Tu, J
Year 2017
Conference name FEDSM2017
Conference location Waikoloa, Hawaii
Conference dates 30 July - 3 August 2017
Proceedings title Proceedings of the ASME Fluids Engineering Division Summer Meeting (FEDSM2017)
Publisher The American Society of Mechanical Engineers
Place of publication United States
Start page 1
End page 6
Total pages 6
Abstract Recent rapid development of the carbon nanotubes (CNTs) industry has raised health concerns as these engineered particles have the appearance of asbestos, which is a well-known inhalation hazard. Compared to asbestos, CNTs have similar elongated rod shaped structure, while they are in nano-scale where the particle motion is markedly affected by Brownian diffusion. However, limited studies on Brownian dynamics of CNTs are available in the literature and the details of motions of these elongate ultrafine particles, and in particular, their transport and deposition processes are largely unknown. In this study, multi-scale analysis of transport and deposition of elongated particles in micro and nano-scales were performed. Particular attention was given to the differences and similarities of the physical mechanisms governing the particle/fiber motions at different length scales. The study was focused on revealing the details of the interaction between elongated particles at different scales and the fluid motions. Such information is very useful in understanding the transport processes of asbestos and nano-fibers in human airways for inhalation risk assessment studies.
Subjects Materials Engineering not elsewhere classified
Numerical Modelling and Mechanical Characterisation
Computational Fluid Dynamics
DOI - identifier 10.1115/FEDSM2017-69083
Copyright notice Copyright © 2017 ASME
ISBN 9780791858059
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