Geometry and airflow dynamics analysis in the nasal cavity during inhalation

Clinical Biomechanics
Kiao InthavongDennis O Frank-Ito

Abstract

A major issue among computational respiratory studies is the wide variety of nasal morphologies being studied, caused by both inter-population and inter-subject variations. Six nasal cavity geometries exhibiting diverse geometry variations were subjected to steady inhalation flow rate of 15L/min. to determine if any consistent flow behaviour could be found. Despite vastly different geometries we were able to identify consistent flow patterns including relatively high velocity in the nasal valve region, followed by flow continuing predominantly in the inferior half of the airway. We also found conformity among models where the inhaled air reached a near-conditioned state by the middle of the nasal cavity. Air from the front of the face reached the olfactory regions while air from the lateral sides of the face moved through the inferior half of the nasal cavity. The ability to predict gross flow features provides a baseline flow field to compare against. This contributes towards establishing well defined flow predictions and be used as a comparison for future larger studies.

Citations

Mar 11, 2020·Frontiers in Bioengineering and Biotechnology·Shani Elias-KirmaJosué Sznitman
Jun 25, 2019·Clinical Otolaryngology : Official Journal of ENT-UK ; Official Journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery·Thomas RadulescoJustin Michel
Aug 28, 2020·Ear, Nose, & Throat Journal·Thomas RadulescoJustin Michel
Dec 15, 2020·Current Opinion in Otolaryngology & Head and Neck Surgery·Narinder Pal Singh, Kiao Inthavong
Feb 7, 2021·Clinical Biomechanics·Ryan M Sicard, Dennis O Frank-Ito
Apr 25, 2021·Respiratory Physiology & Neurobiology·Seung-Kyu Chung, Yang Na
Jun 21, 2021·Respiratory Physiology & Neurobiology·Praween SenanayakeKiao Inthavong
Jul 15, 2021·Scientific Reports·Qiwei XiaoDenis J Doorly
Sep 14, 2021·Biomechanics and Modeling in Mechanobiology·Mohammad Hasan TaheriXinguang Cui

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