摘要
为了解航空发动机空气系统中盘缘篦齿的流动及封严情况,采用数值模拟方法对二维盘缘篦齿封严特性进行了系统的研究。使用商业软件FLUENT 6.3对不同的盘缘篦齿齿数N、轴向间隙s和径向间隙d分别进行了计算,得出了在各种情况下泄漏系数随转速的变化关系,主要结论为:转速对篦齿封严的影响不明显;两个齿的封严效果比单个齿的好;相同的径向间隙d下,轴向间隙s越大,封严效果越好;相同的轴向间隙s下,径向间隙d越小,封严效果越好。
Numerical simulation of tow-dimensional straight-through rim seal properties are studied in aircraft engines.Analyzing the results obtained at different rim seal,axial clearance,radial clearance and rotational speed with CFD software FLUENT6.3.The main conclusion includes： The rotational speed of the rim seal of the impact is not obvious;Two rim seal effect is better than single rim;under the same radial clearances,the bigger the axial clearances,the better the seal effect;and under the same axial clearances,the smaller the radial clearances,the better the seal effect.
出处
《机械设计与制造》
北大核心
2013年第7期94-97,共4页
Machinery Design & Manufacture
