Large Eddy Simulation of Airflow Structural Characteristics in Real Human Mouth-throat Model
Accurate simulation for airflow structural characteristics in the human mouth-throat model plays an important role in analyzing the filter effect of pharynx and larynx and the diffusion,transition and deposition patterns of aerosol in human upper respiratory tract.Large eddy simulation was used to simulate the airflow movement in human mouth-throat model in the conditions of the cyclic respiratory pattern,and the airflow structural characteristic in mouth-throat model was discussed.The results show that two velocity growth points generated in pharyngeal and laryngeal region; the airflow separates in region near the pharynx and the separation zone appears near the anterior wall of pharynx; A turbulence jet appears in the glottal region and the airflow; the high velocity zone is created in pharynx and larynx,and the phenomenon of airflow separation appeared in the pharynx.In the process of cyclic exhalation,the phenomenon of airflow separation didnt appear in the pharynx and larynx.
large eddy simulation mouth-throat model airflow movement numerical simulation
LI Fu-Sheng SUN Dong XU Xin-xi LIU Xiao-Hui TAN Shu-Lin
Institute of Medical Equipment, Academy of Military Medicine Sciences; National Biological Protection Engineering Center, Tianjin 300161 China
国际会议
香港
英文
292-295
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）