Nasal airflow patterns in a patient with septal deviation and comparison with a healthy nasal cavity using computational fluid dynamics

Background and objective: Causes for nasal airway obstruction (NAO) are many but septum deviation is the most prevalent etiology. A deviated affects airflow dynamics in human cavity, which turn physiological functions of cavity like heating, humidification, filtration capabilities. The present study investigates compares patterns a healthy to septal cavity. Methods: Two models considered compared this study. One with second patent Airflow analysis carried out by developing CT scans into 3D using Materialise MIMICS (Materialise, Ann Arbor, MI), then FLUENT solver ANSYS 2020R2. simulations airflows ranging laminar turbulent flows SST k-ω turbulence model. Polyhedral meshes used mesh check Grid Convergence Index studies adopted. Results: pressure velocity profiles assessed wide range mass flow rates. results indicate pattern rates over 15 LPM. show aberrated where peak observed at mid-nasal region rather than valve region. There was 38% 55% higher resistance as normal drop 60%–120% when Conclusion: greatly distribution resulting velocities region, increased resistance. Hence NAO has be rectified proper surgical procedures.