压气机非定常叶顶间隙流的数值模拟研究  

INVESTIGATION ON UNSTEADY TIP CLEARANCE FLOW IN A COMPRESSOR BY NUMERICAL SIMULATIONS

作　　者：邓向阳[1] 张宏武[1] 朱俊强[1] 陈静宜[1] 黄伟光[1] 

机构地区：[1]中国科学院工程热物理研究所

出　　处：《工程热物理学报》2006年第2期229-231,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50406027)

摘　　要：利用数值方法研究了某低速轴流孤立压气机转子中非定常叶顶间隙流的流动特征和频率特性。结果显示转子顶部区域的压力脉动主要来源于叶顶泄漏涡的非定常波动。波动的具体形式表现为泄漏涡瞬态空间位置、尺度和形态的周期性变化,波动频率为1266 Hz。Numerical methods were utilized to investigate the time-dependent flow patterns and the frequency characteristics of unsteady tip clearance flow in an axial-flow low-speed isolated compressor rotor. The result shows that unsteady tip leakage vortex produces strong pressure fluctuations in the rotor tip region, and experiences periodic changes in its spatial locations, sizes and shapes with a frequency of 1266 Hz.

关 键 词：顶部间隙流 非定常流动 频率 压气机 

分 类 号：TK474[动力工程及工程热物理—动力机械及工程]