Method Dynamic model of the exhalation valve plate in pressure oxygen mask was established.Aerodynamic force on the plate was determined by flowfield computing.

• 方法建立加压供氧面罩呼气活门板的动态数学模型,活门板上的气动力由流场计算确定,采用实验测量结合数值仿真的方法,对呼气活门板的动态特性进行了数值分析。