Research progress of pulmonary particle movement mechanical model

The movement and deposition of inhaled particles in the lung tissue have an important influence on the respiratory physiology of human body. The corresponding particle dynamics model plays a vital role in exploring the pathogenic factors and treatment methods of lung diseases. Such as evaluating the optimal design of pulmonary atomization drug delivery and the impact of particulate air pollutants on the lung. According to the different knowledge and modeling methods, this paper classifies, combs and analyzes several representative particle dynamics models in lung airways in recent years. We divided the mechanism models into the biological model, physical model and numerical simulation model. The biological models include in vivo imaging and pharmacokinetic methods; physical models include bionic and microfluidic chip models; the numerical models include respiratory tract model, airflow model and particle model. Moreover, the numerical solution and fluid-structure-interaction models were also reviewed, especially the application prospect of the lattice Boltzmann method.