对转压气机中自循环机匣处理扩稳机理的研究

郭彦超; 高丽敏; 杨冠华; 王磊

doi:10.13224/j.cnki.jasp.20210009

对转压气机中自循环机匣处理扩稳机理的研究

doi: 10.13224/j.cnki.jasp.20210009

郭彦超^1,2,,
高丽敏^1,2, ,,
杨冠华^1,2,
王磊^1,2

1.
西北工业大学动力与能源学院，西安 710129
2.
西北工业大学翼型、叶栅空气动力学国家级重点实验室，西安 710129

基金项目: 国家科技重大专项（J2019-Ⅱ-0016-0037）；国家自然科学基金重大项目（51790512）

详细信息

作者简介:
郭彦超（1993-），男，博士生，研究领域为叶轮机械气动热力学。E-mail：guo_yc@mail.nwpu.edu.cn

通讯作者:
高丽敏（1973-），女，教授、博士生导师，博士，研究领域为叶轮机械气动热力学。E-mail：gaolm@nwpu.edu.cn

中图分类号: V231.3
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- 被引次数: 0
出版历程
- 收稿日期: 2021-01-09
- 刊出日期: 2022-01-28

Study on the mechanism of stability improvement of the self-recirculating casing treatment in a counter-rotating compressor

GUO Yanchao^{1,2
,},
GAO Limin^{1,2
, ,},
YANG Guanhua^1,2,
WANG Lei^1,2

1.
School of Power and Energy，Northwestern Polytechnical University，Xi'an 710129，China
2.
National Key Laboratory of Aerodynamic Design and Research，Northwestern Polytechnical University，Xi'an 710129，China

摘要

摘要: 为拓宽自循环机匣处理的适用范围，以对转压气机为研究对象，采用数值方法研究了自循环机匣处理的扩稳机理和轴向喷气位置对其扩稳能力的影响，详细分析了自循环机匣处理前后对转压气机的总体特性和转子叶尖流场的变化。结果表明:对最先失速的转子配置自循环机匣处理可以获得可观的裕度改善，但轴向喷气位置对扩稳效果和压气机的气动性能均有显著影响；轴向喷气位置不宜距离叶片前缘太近，喷气位置距离叶片前缘40%轴向弦长时失速裕度提高了7.73%且峰值效率损失最小。自循环机匣处理通过降低叶尖负荷和减弱叶顶二次泄漏流强度以及抑制叶顶泄漏流与主流相互掺混来延迟失速发生。通过自循环机匣处理可以改变对转压气机的最先失速级，但不改变失速起始类型。
- 对转压气机 /
- 自循环机匣处理（SRCT） /
- 喷气位置 /
- 扩稳机理 /
- 失速裕度
Abstract: In order to broaden the application range of self-recirculating casing treatment（SRCT），a counter-rotating compressor was used as the research object.The stability enhancement mechanism of SRCT and the effect of axial injection position on its stability expansion ability were studied by numerical method.The overall characteristics of the counter-rotating compressor and the change of rotor tip flow field with/without self-recirculating casing treatment were analyzed in detail.The results showed that considerable stall margin improvement can be obtained by configuring a self-recirculating casing on the rotor that stalled first，but the axial injection position had an important effect on the stability improvement effect and the aerodynamic performance of the counter-rotating compressor.The axial injection position should not be too close to the leading edge of the blade；when the injection position was 40% of the axial chord length from the leading edge of the blade，the improvement of stall margin was 7.73% and the peak efficiency loss was minimum.Self-recirculating casing treatment can delay stall by reducing blade tip load，weakening the strength of the tip secondary leakage flow and restraining the mixing of the tip leakage flow and main flow.The first stall stage of counter-rotating compressor can be changed by self-recirculating casing treatment，without change of the stall initiation type.
- counter-rotating compressor /
- self-recirculating casing treatment（SRCT） /
- injection position /
- mechanism of stability improvement /
- stall margin

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