摘要
采用数值模拟方法对某一离心压缩机小流量级内部全三维有粘流场进行了详细的分析,得到了内部各元件主要气动参数的分布情况。通过减小D4/D2值,减小叶栅稠度,增大当量扩张角等方法有效减小了叶片扩压器内的摩擦损失。数值计算结果表明,改进后计算模型多变效率提高约1.02%,效果显著。
A 3-D viscous flow field in a inlet chamber of centrifugal compressor has been analyzed in detail by numerical simulation method. The main aerodynamic parameters distribution of the components was obtained. The friction loss of the vane diffuser has been reduced by reducing the ratio of D4/D2 and the consistency of the cascade as well as increasing the equivalent angle of expansion. The numerical results show that the polytropic efllciency of computational model has been improved by 1.02% and the effect is remarkable.
出处
《机电产品开发与创新》
2014年第3期26-28,共3页
Development & Innovation of Machinery & Electrical Products
关键词
离心压缩机
数值模拟
小流量模型级
叶片扩压器
centrifugal compressor
numerical simulation
small flowrate model stage
vane diffuser
