流体机械

2007, No.416(02) 1-4

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45°周向压力畸变对轴流压气机流动影响的试验研究
Experimental Investigation of Response of Axial Flow Compressor to 45° Circumferential Inlet Pressure Distortion

黄健;吴虎;贾海军;
HUANG Jian,WU Hu,JIA Hai-jun(Northwestern Polytechnical University,Xi' an 710072,China)

摘要(Abstract):

借助于某高速轴流压气机试验台,研究了45°周向总压畸变对轴流压气机转子绝对流动角的影响,初步探索了周向压力畸变引起的转子进口/出口绝对流动角变化的规律。结果表明,在45°周向总压畸变情况下,压气机转子的进口绝对流动角在周向受到影响的范围大约为90°(即畸变扰动区),转子出口的气流绝对流动角的畸变扰动区沿着周向大约为75°。气流绝对流动角在沿转动方向进入畸变扰动区时开始增加,在畸变网边缘达到正向最大值(与转动方向同为正);然后逐渐减小,在跨出畸变网的边缘得到负的最大值;随后又慢慢增加,跨出畸变扰动区。并且,随着换算质量流量的减少,转子进口绝对流动角变化不明显,而转子出口的绝对流动角则明显增加。
The influence of 45° circumferential inlet pressure distortion in an axial flow compressor absolute flow angle is investigated experimentally with the help of a high speed subsonic compressor test rig.The result show that,with 45o circumferential inlet pressure distortion,the influenced sector of absolute flow angle at rotor inlet is about 90°and at rotor outlet is about 75°.Along rotor rotation direction,the absolute flow angle is increased when coming in the "distortion influenced sector" and the maximum value is got at the edge of screen; then it is reduced and the minimum value is got at another edge of screen;in the end,absolute flow angle is increased again until "distortion influenced sector" is passed.However,the absolute angle is not changed obviously at rotor inlet when the equivalent mass flow is reduced,but it is increased obviously at rotor outlet.

关键词(KeyWords): 轴流压气机;试验研究;压力畸变;绝对流动角
axial-flow compressor;experimental investigation;inlet pressure distortion;absolute flow angle

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作者(Author): 黄健;吴虎;贾海军;
HUANG Jian,WU Hu,JIA Hai-jun(Northwestern Polytechnical University,Xi' an 710072,China)

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