推进技术 ›› 2016, Vol. 37 ›› Issue (5): 892-899.

• 舰船推进 • 上一篇    下一篇

压力面小翼对涡轮叶栅不同冲角下流场影响的实验研究

钟兢军,魏 曼   

  1. 大连海事大学 轮机工程学院,辽宁 大连 116026,大连海事大学 轮机工程学院,辽宁 大连 116026
  • 发布日期:2021-08-15
  • 作者简介:钟兢军,男,博士,教授,研究领域为叶轮机械气动热力学。E-mail: zhongjj@dlmu.edu.cn 通讯作者:魏 曼,女,博士生,研究领域为叶轮机械气动热力学。
  • 基金资助:
    国际自然科学基金重点项目(51436002);中央高校基本科研业务费专项资助(3132014319);辽宁省高等学校创新

Experimental Investigation of Different Pressure-Side

  1. Marine Engineering College,Dalian Maritime University,Dalian 116026,China and Marine Engineering College,Dalian Maritime University,Dalian 116026,China
  • Published:2021-08-15

摘要: 为了控制和降低涡轮动叶由叶顶间隙所引起的泄漏损失,对加装不同宽度压力面小翼的涡轮叶栅间隙流场进行了实验研究,详细测量了±10°,±5°,0°冲角时涡轮叶栅出口流场和叶片表面静压分布情况。结果表明:随来流冲角由负到正,泄漏涡强度减弱,泄漏损失降低;通道涡强度增强,其引起的损失增大。压力面小翼在不同冲角下均对叶顶泄漏流动具有一定的控制作用,在设计冲角和较小的正冲角工况下PW0.3方案压力面小翼作用效果较好,分别使叶栅总损失降低10.38%和8.11%。在冲角变化范围更大时,PW0.4方案压力面小翼效果更好。

关键词: 涡轮叶栅;冲角;压力面小翼;间隙泄漏流动;实验测量

Abstract: To control and reduce the leakage loss of the rotor by the tip clearance,detailed experiments have been carried out to investigate the effect of the tip clearance flow in a turbine cascade with different width of pressure-side winglets. The flow field of the cascade outlet and the static pressure distribution on the blade surfaces have been detailed surveyed with different incidences (±10°,±5°,0°). The results show that,as the incidences change from negative to positive,the leakage vortex weaken and the leakage loss decreases,the passage vortices and their losses are strengthened. Pressure-side winglet has a certain effect with all different incidences. The PW0.3 scheme is the best with the design and the smaller incidence ,it can make the total loss of the cascade reduced 10.38% and 8.11%.As the change to the incidence range is larger,the PW0.4 scheme's effect is better.

Key words: Turbine cascade;Incidence;Pressure-side winglet;Tip leakage;Experimental investigation