Numerical study of nasal hair effects on breathing comfort and particle deposition in a simplified vestibule region.

Nasal hairs, often overlooked in human respiratory system studies, can be a decisive factor in maintaining respiratory health. Vibrissae can capture a certain range of particle sizes due to their filtering function, while they may also contribute to more breathing resistance. In this study, the role of nasal hairs in particle filtration and pressure drop within the nasal vestibule was investigated using computational fluid dynamics (CFD) simulations.