Research on Air Flow Distribution Characteristics of Human Respiratory System Based on CFD

The human respiratory system continuously exchanges heat with the external environment. How to accurately simulate the airflow distribution of the respiratory system is the key to exploring the secrets of heat exchange between the human body and the external environment. In this paper, multi-dimensional scanning technology is used to reconstruct the Geometric modeling of the lung, and turbulence model, periodic boundary conditions are used to conduct transient simulation of respiratory tract temperature and wind speed. Obtain data on temperature and wind speed changes in the respiratory system within a cycle. Compare the simulation results with existing models and experimental results to determine the accuracy of the model constructed in this paper. The research conclusion can be applied to quantitatively describe the heat exchange between the respiratory system and the external environment, providing new ideas for the study of respiratory heat dissipation in human thermal regulation modeling.