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Science articles
Science articlesThe effect of the nasal cavity form on air flow distribution during inhalation
R. V. Neronov (1), G. N. Luk’yanov (2), A. A. Rassadina (2), A. A. Voronin (2), A. G. Malyshev (2)
(1) Joint Stock Company Sovremennye Meditsinskie Tekhnologii, Saint Petersburg, Russian Federation
(2) Federal State Agency Educational Institution of Higher Education Saint Petersburg National Research University of Informational Technologies, Mechanics and Optics, Saint Petersburg, Russian Federation
UDK: 616.211-008.4-073.178
DOI: https://doi.org/10.18692/1810-4800-2017-1-83-94
ABSTRACT
The authors performed numerical modeling of convective air flow in three 3D-models of the nasal cavity during inhalation. The models of the nasal cavity had lepto-, meso- and platicavital forms. The simulation results revealed the specific features of aerodynamics of various forms of the nasal cavity. Platicavital nasal cavity is characterized by more turbulent air flow and leptocavital one – by more laminar. For all nasal cavity forms air flow rate reaches its maximum value in the lower two thirds of the front and middle part of nose. The same trend is observed in posterior part of plati- and mezocavital nasal cavities, and in leptocavital one the maximum values of the air flow rate are observed in the upper two thirds of the nasal cavity.
In the direction from the nostrils to the choanas, pressure profile equalizes, and subsequently goes down. The highest pressure values during inhalation were observed in the lower and middle nasal passages. In the front part of the common nasal passage the maximum pressure value is observed in the upper two thirds of the cross-section for platicavital model form and in the lower two thirds of the cross-section for the meso- and leptocavital forms. During inhalation the greatest pressure values are observed in the upper third of the middle and posterior part for all the nasal cavity forms.
Publication date:
10.02.2017
Keywords:
nasal cavity aerodynamics, numerical simulation, 3D-model, platicavital nasal cavity, mezocavital nasal cavity, leptocavital nasal cavity, nasal breathing. For citation:
Neronov R. V., Luk’yanov G. N., Rassadina A. A., Voronin A. A., Malyshev A. G. The effect of the nasal cavity form on air flow distribution during inhalation. Rossiiskaya otorinolaringologiya. 2017;1:83–94. https://doi.org/10.18692/1810-4800-2017-1-83-94