李六南1, 屈骁1(
), 张燕峰2,3, 卢新根2,3, 朱俊强2,3
收稿日期:2025-06-09
修回日期:2025-07-25
接受日期:2025-08-25
出版日期:2025-09-08
发布日期:2025-09-05
通讯作者:
屈骁
E-mail:quxiao@bit.edu.cn
基金资助:
Liunan LI1, Xiao QU1(
), Yanfeng ZHANG2,3, Xingen LU2,3, Junqiang ZHU2,3
Received:2025-06-09
Revised:2025-07-25
Accepted:2025-08-25
Online:2025-09-08
Published:2025-09-05
Contact:
Xiao QU
E-mail:quxiao@bit.edu.cn
Supported by:摘要:
转静干涉导致的进口边界层扭曲对高负荷低压涡轮端区二次流的发展具有重要影响。针对民用涡扇发动机高负荷低压涡轮,借助试验和数值模拟相结合的方法,开展了尾迹扫掠下进口边界层扭曲对轮毂端区二次流发展演化的影响机制研究,并量化了上游尾迹、边界层扭曲分别对端区二次流影响的权重占比。结果表明,在进口雷诺数为1×105、湍流度为2.5%的条件下,端区边界层扭曲通过增强端区流体与主流之间的剪切层不稳定性和削弱叶栅通道内的横向压差,减小端区二次流,降低流动损失。随着旋转端壁转速的增加,端区边界层扭曲加剧,这导致了前缘边界层增厚,促进端区二次流发展,增加流动损失。上游尾迹将进一步促进剪切层失稳,使得端区二次流减弱,但尾迹的掺混耗散对低压涡轮整体气动性能带来了负面影响。在栅后40%轴向弦长位置处,边界层扭曲使流动损失较基准工况减少3.45%左右,而边界层扭曲的加剧使流动损失增加近6.25%,上游尾迹的掺混耗散使流动损失进一步增加约10.08%。
中图分类号:
李六南, 屈骁, 张燕峰, 卢新根, 朱俊强. 端区边界层扭曲对高负荷涡轮二次流的影响[J]. 航空学报, 2026, 47(5): 132394.
Liunan LI, Xiao QU, Yanfeng ZHANG, Xingen LU, Junqiang ZHU. Effect of end zone boundary layer skew on secondary flow in high-lift turbine[J]. Acta Aeronautica et Astronautica Sinica, 2026, 47(5): 132394.
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