CAJ | 학술논문

通过数值手段分析了端壁运动对带有叶尖自发射流的叶栅流场特性、叶顶间隙泄漏流量特性及叶片周向载荷分布特性的影响。结果表明：端壁运动的反向刮削作用会显著影响间隙附近流场，随着端壁运动速度增大，泄漏涡和上通道涡会逐渐向叶片吸力面靠近，同时，泄漏涡强度逐渐削弱，而上通道涡强度逐渐增强，平均总压损失增大；端壁运动对叶尖自发射流抑制泄漏流的效果有放大作用；端壁运动会显著改变叶尖吸力面附近静压系数的分布，使其具有后加载的特性。
통과수치수단분석료단벽운동대대유협첨자발사류적협책류장특성、협정간극설루류량특성급협편주향재하분포특성적영향。결과표명：단벽운동적반향괄삭작용회현저영향간극부근류장，수착단벽운동속도증대，설루와화상통도와회축점향협편흡력면고근，동시，설루와강도축점삭약，이상통도와강도축점증강，평균총압손실증대；단벽운동대협첨자발사류억제설루류적효과유방대작용；단벽운동회현저개변협첨흡력면부근정압계수적분포，사기구유후가재적특성。
The influence of endwall movement on the flow field ,the leakage flow rate and the blade load of the cascade with spontaneous tip injection ( STI ) was numerically analyzed .The results show that the scraping action produced by the endwall movement would influence the flow field near the gap remarkably .With the increase of the velocity of the endwall , the leakage vortex and passage vortex gradually approached to the suction side ,the leakage vortex is gradually weakened , while the passage vortex is gradually strengthened ,the average total pressure loss of the flow field in the cascade decreased . The endwall movement could strengthen the inhibition effect on tip leakage flow by STI .In addition,the endwall movement could also change the distribution of static pressure coefficient on the suction side , and make it have the characteristic of rear loading .