跨音速轴流风扇转子叶顶泄漏流的数值研究

工程热物理学报 , 2008, 29(12): 2027-2032.

1.中国科学院工程热物理研究所,北京,100190;中国科学院研究生院,北京,100190

2.中国科学院工程热物理研究所,北京,100190;Tri-State University,Angola,IN 46703,USA

3.中国科学院工程热物理研究所,北京,100190

4.中国科学院工程热物理研究所,北京,100190

基金项目: 国家自然科学基金(50676094)

NUMERICAL SIMULATION ON UNSTEADY TIP LEAKAGE FLOW IN A TRANSONIC AXIAL FAN ROTOR

采用数值模拟方法研究了不同间隙,不同流量工况下叶顶泄漏流非定常流动特征,发现在研究的三个间隙中,只有当间隙大于或等于设计间隙时,流动才会出现非定常性.随着流量的减小,泄漏涡轨迹前移,当泄漏涡轨迹到达相邻叶片压力面时,影响压力面压力分布,打破流场静态平衡,引起叶顶流场及激波位置、强度发生非定常波动.

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