CAJ | 학술논문

对进口周向总压畸变条件下的某跨声速压气机静子-转子级，采用多畸变区方案进行非定常数值模拟。结果表明：①畸变区下游转子叶顶区域的气流流通能力较非畸变区有明显恶化，这是因为转子在扫出畸变区时，叶片负荷增加，叶片前缘静压差加大，同时畸变造成下游气流轴向速度明显减小；②静子尾迹对叶顶区域的流动有一定改善，原因为静子尾迹会在下游转子叶盆前缘积聚，能减弱叶顶区域的二次泄漏。
대진구주향총압기변조건하적모과성속압기궤정자-전자급，채용다기변구방안진행비정상수치모의。결과표명：①기변구하유전자협정구역적기류류통능력교비기변구유명현악화，저시인위전자재소출기변구시，협편부하증가，협편전연정압차가대，동시기변조성하유기류축향속도명현감소；②정자미적대협정구역적류동유일정개선，원인위정자미적회재하유전자협분전연적취，능감약협정구역적이차설루。
The unsteady flow field of stator-rotor stage under inlet circumferential total pressure distortion has been numerically simulated by multiple distortion domain method. The computation results show that the inlet total pressure distortion can increase the load, enlarge blade tip leading edge static pressure differ?ence and slow the flow axial velocity, which causes the tip blockage. The blade tip clearance flow can bene?fit from the stator wake because the stator wake accumulates on the downstream rotor blade pressure side which can effectively suppress the double-leakage flow.