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1)  tip clearance vortex
间隙涡
1.
From a computation of the three dimensional flow in the first stage in a power turbine,it can be indicated that when tip clearance height is 3 mm,the fluid roll up to form tip clearance vortex at the corner between blade tip and suction surface at about 25% axial chord,resulting in the blockage of main flow.
对某动力涡轮第一级内三维流动的数值计算结果表明,流体在经过动叶叶顶间隙以后在约25%叶顶轴向弦长处(τ=3 mm)在叶顶与吸力边夹角处卷起形成间隙涡,造成流动阻塞,同时在间隙内叶片顶部10%叶顶轴向弦长处(τ=3 mm)开始在压力边出现叶顶分离涡,使得间隙流动损失增加。
2.
Based on the distributions of secondary velocity and averaged azimuthal flow angle, the form of mixing process of tip clearance vortex with passage vortex and its influences on secondary flow structure were studied.
对不同动叶顶部间隙的Aachen一级半轴流透平内部流动进行了数值模拟,以二次速度矢量和周向平均气流角的分布为依据,分析了间隙流、间隙涡与动叶顶部通道涡掺混的方式及其对二次流结构的影响。
3.
Another more tip clearance vortex appears near the leading edge,which dissipates quickly and keeps the regular one almost near the suction surface.
通过间隙的流量增加,同时吸力面侧在叶片前缘、叶片中部各形成一个间隙涡
2)  clearance vortex
间隙涡流
1.
Noise and Characteristics tests are conducted on an axial flow fan and the effect of the clearance vortex of the fan is analysed.
分析了轴流式风机叶尖间隙涡流对噪声特性和气动性能的影响 ,通过试验验证了在叶片端部加装旋转环控制间隙涡流的效果 ,结果表明了加旋转环可在一定程度上降低噪声并改善气动性能。
3)  turbine clearance; turbine gap
涡轮间隙
4)  tip leakage vortex
间隙泄漏涡
5)  eddy current clearance sensor
电涡流间隙传感器
6)  turbocharger bearing clearance
涡轮增压器轴承间隙
补充资料:白鼋涡(杂言走笔)
【诗文】:
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翻涡跳沫兮苍苔湿,藓老且厚,春草为之不生。
兽不敢惊动,鸟不敢飞鸣。白鼋涡涛戏濑兮,
委身以纵横。王人之仁兮,不网不钓,得遂性以生成。



【注释】:



【出处】:
全唐诗:卷125_118
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