AIRFLOW MOVEMENT IN HUMAN MOUTH-THROAT MODEL DUE TO CYCLIC RESPIRATORY MODE

摘要：

The airflow movement in human mouth-throat model is investigated using the method of CFD.The airflow patterns in human mouth-throat model and effect of airflow movement on the shear stress acting on the wall of the mouth-throat model and the aerosols deposition are discussed.During the inhalation phase, the airflow separates gradually near the outer wall of the pharynx and near the outer wall for the upper part of the trachea downstream of the glottis with the features of the separation zone appearing.During the exhalation phase, the high velocity zone is observed near the outer wall of pharynx and near the outer wall of the larynx.During the cyclic respiratory pattern, the high axial velocity zone and secondary flow are generated intermittently, eventually leading to generate the high shear stress zone intermittently.

关键词： Mouth-throat model.Cyclic respiratory Airflow movement Numerical simulation Particle image velocimetry(PIV)

作者: X.G.ZHAO X.X.XU SH.L.TAN Y.J.LIU ZH.H.GAO

作者单位: Tianjin Institute of Medical Equipment,National Biological Protection Engineering Center,Tianjin 300161,P,R,China

会议类型: 国际会议

会议名称: 3rd International Conference on Mechanical and Electrical Technology(ICMET2011) (2011第三届机械与电气技术国际会议)

会议地点: 大连

会议语种:英文

页码: 319-324

在线出版日期: 2011-08-26（万方平台首次上网日期，不代表论文的发表时间）