齿轮风阻损失仿真及其实际应用

对多种齿形大小相似但种类不同的齿轮进行了仿真研究，对轮齿周围的空气流场以及齿面压力场进行了分析，并对某型航空发动机中央传动锥齿轮的风阻损失进行了评估.结果表明，齿轮的风阻损失由压力损失和黏性力损失构成，其中黏性力损失占比为4%～17%.由于壁面作用，斜齿轮轮齿旋向不同也引入了约60%的风阻损失差异.航空发动机中央传动锥齿轮的风阻损失则在总损失中占比约为49%. 

Simulation of gear windage losses and its application

Several different types of gears,yet with similar size,were simulated.The air flow around gear teeth and the pressure distribution on gear teeth surfaces were studied.The windage losses of a specificinternal bevel gear adopted in an aero engine was calculated.Result showed that,gear windage losses were consist of pressure loss and viscous force loss,and viscous force loss occupied ratio of 4％-17％.60％ difference in windage losses of helical gears with opposite hand of helix suggests the effect of wall.Windage losses for internal bevel gear in aero engine occupied about 49％ of total transmission losses.