Analysis of 2D Human Airway in Laminar and Turbulent Flow Model

In this article, an airflow study of a two-dimensional human airway model is performed using computational fluid dynamics (CFD). The human respiratory system is one of the important parts of the human body where CFD is used to understand the physics of flow, diagnosis, prognosis, and treatment of respiratory diseases. The function of the human respiratory system is to deliver oxygen between the atmosphere and the lungs and remove carbon dioxide. Airflow and particle deposition in the human respiratory tract provide important information for clinical purposes (regional ventilation) and inhalation treatment. In this article, a sixth-generation two-dimensional airflow characteristic of the human respiratory tract is simulated using commercial CFD software. Three different inspiratory flow rates of 10 L/min (normal respiration), 45 L/min (moderately rapid respiration), and 60 L/min (rapid respiration) are considered to see the effects of flow rates. Velocity and pressure contours are calculated to understand the flow physics of the human respiratory system.