The flow in periciliary layer in human lungs with Navier-Stokes-Brinkman equations

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Published: May 1, 2023
DOI: https://doi.org/10.5556/j.tkjm.54.2023.3738
Keywords:
Finite element method, Navier-Stokes-Brinkman equations, cilia, moving solid phases, periciliary layer.

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Nattapol Oangwatcharaparkan
King Mongkut's Institute of Technology Ladkrabang
Kanognudge Wuttanachamsri
King Mongkut's Institute of Technology Ladkrabang

Abstract

In the human respiratory tract, air breathed in is often contaminated with strange particles such as dust and chemical spray, which may cause people respiratory diseases.
However, the human body has an innate immune system that helps to trap the debris by secreting mucus to catch the foreign particles, which are removed from the body by the movement of tiny hairs lining on the surface of the epithelial cells in the immune system.
The layer containing the tiny hairs or cilia is called Periciliary Layer (PCL). In this research, we find the velocity of the fluid in the PCL moved by a ciliary beating by using the Navier-Stokes-Brinkman equations.
We apply the Galerkin finite element method to determine numerical solutions. For the steady linear case of the equation, the numerical result is in good agreement with an exact solution.
Including the time derivative and nonlinear terms, we show that the velocity of the liquid is affected by the velocity of the solid, which follows the physical meaning of the fluid flow.
The result can be applied as a bottom boundary condition of the mucous layer to be able to find the velocity of mucus in the human lungs.

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How to Cite
Oangwatcharaparkan, N., & Wuttanachamsri, K. (2023). The flow in periciliary layer in human lungs with Navier-Stokes-Brinkman equations. Tamkang Journal of Mathematics, 54(2), 107–120. https://doi.org/10.5556/j.tkjm.54.2023.3738
Issue
Vol. 54 No. 2 (2023)
Section
Papers
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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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