| 在静止扩压环形叶栅中捕获轴流压气机非定常耦合流型的实验研究 |
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| 引用本文： | 陆亚钧,葛敬东,邱亚希,闻学.在静止扩压环形叶栅中捕获轴流压气机非定常耦合流型的实验研究[J].燃气涡轮试验与研究,2004,17(1):6-11,32. |
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| 作者姓名： | 陆亚钧 葛敬东 邱亚希 闻学 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目(10072008) |
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| 摘 要： | 本文研究了在静止扩压环形叶栅中如何实现非定常自然流型(UNFT)向非定常耦合流型(UCFT)的转变，以及耦合流型对轴流压气机能带来多大的时均性能提高。在环形叶栅台上的大量实验研究表明：当以一定方式实现非定常耦合流型后，其分离旋涡缩小，流场中涡量减小，流动损失下降，时均性能有较大幅度提高。实验中将常规的气动感头测量和小惯性热线风速仪测量以及数字式PIV瞬态场测量技术相结合，来获得非定常两代流型的流动图案和时均性能及其相互比较。
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| 关 键 词： | 静止扩压环形叶栅 轴流压气机 非定常自然流型 分离流 非定常耦合流型 流动损失 实验研究 |
| 文章编号： | 1672-2620(2004)01-0006-06 |
| 修稿时间： | 2003年11月7日 |
Experimental Investigation on Capturing UCFT of Axial Compressor in Annual Static Diffusion Cascade |
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| LU Ya-jun,GE Jing-dong,QIU Ya-xi,WEN Xue.Experimental Investigation on Capturing UCFT of Axial Compressor in Annual Static Diffusion Cascade[J].Gas Turbine Experiment and Research,2004,17(1):6-11,32. |
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| Authors: | LU Ya-jun GE Jing-dong QIU Ya-xi WEN Xue |
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| Abstract: | In this paper, procedures to transform UNFT (Unsteady Natural Flow Typ e) into UCFT (Unsteady Cooperative Flow Type) in annual static diffusion cascade have been investigated together with the time-average performance improvement i n axial compressor with UCFT. The large amount of tests carried out in annual ca scade test rig has proved: With UCFT, the separation vortex, vorticity in flow f ield and dynamic loss have been reduced, while the time-average performance has been significantly improved. The conventional aerodynamic probe, hot-wire anemom eter with small inertia and digital PIV(Particle Image Velocimeter) transient fi eld instrumentation have been combined in the tests to obtain the flow diagram a nd time-average performance of the two flow types as well as the comparison resu lts. |
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| Keywords: | axial compressor annual static cascade unsteady flow separation fl ow UNFT UCFT |
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