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Air conditioning analysis among human nasal passages with anterior anatomical variations Ma, J, Dong, J, Shang, Y, Inthavong, K, Tu, J and Frank-Ito, D 2018, 'Air conditioning analysis among human nasal passages with anterior anatomical variations', Medical Engineering and Physics, vol. 57, pp. 19-28. Document type: Journal Article Collection: Journal Articles Title Air conditioning analysis among human nasal passages with anterior anatomical variations Author(s) Ma, J Dong, J Shang, Y Inthavong, K Tu, J Frank-Ito, D Year 2018 Journal name Medical Engineering and Physics Volume number 57 Start page 19 End page 28 Total pages 10 Publisher Elsevier Abstract A major functional role of the nasal cavity is air conditioning of the inspired environmental air to near alveolar conditions. It is well known that the anatomical disparities among nasal passages can change airflow patterns to a great extent. However, its effect on nasal air conditioning performance remains largely unexplored. This research investigated the nasal air conditioning performance among nasal models with distinct vestibule phenotypes, including subjects with and without vestibule notches. For the mass transfer, we used a two-film theory model to determine the species transport. Airflow patterns, heat and mass transfer between the inhaled airflow and the nasal mucosa were analysed and compared. Results showed that the nasal air conditioning performance is closely related to nasal passage structures. The anatomical variations, especially the geometry changes in the anterior vestibule region, can increase both heat and mass transfer rate between nasal mucous and respiratory air at the vicinity of the notched regions, while for other regions such as the anterior superior nasal cavity, the heat transfer is greatly reduced to even zero heat flux due to lack of active airflow passing. Subject Biomechanical Engineering Keyword(s) Air conditioning Anatomical variation Heat and mass transfer Nasal cavity Numerical simulation Vestibule notch DOI - identifier 10.1016/j.medengphy.2018.04.010 Copyright notice © 2018 IPEM. Published by Elsevier Ltd. All rights reserved. ISSN 1350-4533 Related Links Link Description https://dx.doi.org/10.1016/j.medengphy.2018.04.010 Link to Published Version   Versions Version Filter Type Thu, 20 Sep 2018, 16:06:38 EST Filtered Full Citation counts: Cited 0 times in Scopus Article Altmetric details: Access Statistics: 15 Abstract Views  -  Detailed Statistics Created: Wed, 19 Sep 2018, 13:27:00 EST by Catalyst Administrator