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Numerical and experimental study of the deposition of micro-sized non-spherical solid particles in the nasal cavity

Numerical and experimental study of the deposition of micro-sized non-spherical solid particles in the nasal cavity

(FAU Funds)

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Start date: 1. January 2019
End date: 1. January 2022
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Abstract

The deposition of atmospheric particulate matter, typically in the micro
range and in sharp of non-spherical shape, in the nasal cavity gaining interest
in recent years. It is important to investigate the deposition fraction of
particles in the nasal cavity since these particles can be easily removed via
nasal wash. The rest of particles will be travelled to the upper and lower
airways as well as the alveoli of the deep lung. Most of force and torque
models for non-spherical particles are only valid for limited flow
conditions.  However, the flow field in the nasal cavity is rather complex
and it is necessary to establish an accurate numerical model for tracking the
motion of non-spherical particles moving in the nasal cavity in connection with
experimental validation. Moreover, many people have the problem of the deviated
nasal septum and it is necessary to understand its influence on the pressure
drop and the deposition fraction of particles.

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