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- W2022976727 abstract "The present study investigates the deposition efficiency during the unsteady inhalation cycle by using Computational Fluid Dynamics (CFD). The unsteady inhalation profile was applied at the outlet of nasopharynx, which had a maximum flow rate of 40.3L/min which corresponds to an equivalent steady inhalation tidal volume flow rate of 24.6L/min. Aerodynamic particle sizes of 5μm and 20μm were studied in order to reflect contrasting Stokes numbered particle behaviour. Two particle deposition efficiencies in the nasal cavity versus time are presented. In general, the deposition of 5μm particles was much less than 20μm particles. The first 0.2 second of the inhalation cycle was found to be significant to the particle transport, since the majority of particles were deposited during this period (i.e. its residence time). Comparisons were also made with its equivalent steady inhalation flow rate which found that the unsteady inhalation produced lower deposition efficiency for both particle sizes." @default.
- W2022976727 created "2016-06-24" @default.
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- W2022976727 date "2010-12-01" @default.
- W2022976727 modified "2023-09-23" @default.
- W2022976727 title "Unsteady Particle Deposition in a Human Nasal Cavity during Inhalation" @default.
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- W2022976727 doi "https://doi.org/10.1260/1757-482x.2.4.207" @default.
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