Diffusional Particle Deposition in the Human Nose and Mouth
Open Access
- 1 January 1989
- journal article
- research article
- Published by Taylor & Francis in Aerosol Science and Technology
- Vol. 11 (3) , 213-220
- https://doi.org/10.1080/02786828908959314
Abstract
Human nose and mouth serve as an effective filter for particles inhaled into the lung. For sufficiently small particles, particle loss to the wall surface of the air pathways is expected to be significant owing to the presence of strong Brownian diffusion. In this paper, we present the filtration results of ultrafine particles obtained from a simulation experiment in a cast of human oropharynx. It was found from the convective diffusion process that at normal breathing rate the inspiratory deposition efficiency of particles of diameter 0.001 μm in nose and mouth is 28.5% and 16.5%, respectively. These deposition fractions rapidly decrease to 0.1% and 0.05% for particles of diameter 0.1 μm.Keywords
This publication has 5 references indexed in Scilit:
- Heat transfer in tube coils with laminar and turbulent flowPublished by Elsevier ,2003
- Theoretical study of nasal depositionBulletin of Mathematical Biology, 1978
- Deposition and Clearance of Inhaled Particles in the Human NoseAnnals of Otology, Rhinology & Laryngology, 1970
- Solid-liquid mass transfer in turbulent pipe flowChemical Engineering Science, 1965
- Study on forced convective heat transfer in curved pipesInternational Journal of Heat and Mass Transfer, 1965