端壁自适应射流出口位置对高速扩压叶栅角区分离的影响

梁作召; 孙鹏; 李晓东; 刘晗

doi:10.13224/j.cnki.jasp.20230325

端壁自适应射流出口位置对高速扩压叶栅角区分离的影响

doi: 10.13224/j.cnki.jasp.20230325

梁作召^1,,
孙鹏¹,
李晓东^1,*, ,,
刘晗²

1.
中国民航大学安全科学与工程学院，天津 300300
2.
中国船舶重工集团公司哈尔滨船舶锅炉涡轮机研究所，哈尔滨 150078

基金项目: 国家自然科学基金民航联合基金重点项目（U2233207）

详细信息

作者简介:
梁作召（2000-），男，硕士生，主要从事叶轮机械内部流动及控制方法研究

通讯作者:
李晓东（1989-），男，讲师，博士，主要从事叶轮机械气动热力学研究。E-mail：xdli@cauc.edu.cn

中图分类号: V231.3
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出版历程
- 收稿日期: 2023-05-17
- 网络出版日期: 2024-05-10

Effects of outlet position on corner separation of high speed compressor cascade with endwall self-adaptive injection

LIANG Zuozhao^1
,,
SUN Peng¹,
LI Xiaodong^{1,*
, ,},
LIU Han²

1.
College of Safety Science and Engineering，Civil Aviation University of China，Tianjin 300300，China
2.
Harbin Marine Boiler and Turbine Research Institute，China Shipbuilding Industry Corporation，Harbin 150078，China

摘要

摘要:
为探究端壁自适应射流对叶栅角区分离和损失特性的影响，以高速扩压叶栅为研究对象，对端壁自适应射流不同出口位置方案进行了数值模拟。研究结果表明：应用端壁自适应射流能有效控制角区分离，减少低能流体堆积，提升叶栅扩压能力，降低叶栅的总压损失，4°冲角时叶栅出口总压损失系数的相对减小量最大可达9.17%。随着端壁自适应射流出口位置向尾缘移动，总压损失系数呈现先减小后增大的控制趋势。出口位置位于分离区中部附近时控制效果最佳，出口位置过于靠前会使总压损失显著增加，同时来流冲角对减损效果的影响也更加明显，正冲角下的叶栅相较于设计冲角更易控制。
- 端壁自适应射流 /
- 角区分离 /
- 高速扩压叶栅 /
- 流动控制 /
- 总压损失
Abstract:
To explore the effects of endwall self-adaptive injection on corner separation and loss performance of high speed compressor cascade, the different outlet positions of endwall self-adaptive injection were studied by numerical simulation method. The results showed that the application of endwall self-adaptive injection can effectively control corner separation, reduce low-energy fluid accumulation, improve cascade pressure expansion ability and reduce total pressure loss of the cascade. The maximum relative reduction of the total pressure loss coefficient of 9.17% of the cascade at attack angle i=4° was obtained. The control effect of the total pressure loss coefficient decreased and then increased with the outlet position of endwall self-adaptive injection moving towards the trailing edge. The optimal control effect was achieved when the outlet position of endwall self-adaptive injection was located near the middle of the suction separation. However, the total pressure loss significantly increased when the outlet position was too far forward. And the effect of the inflow attack angle on the loss reduction effect was also more significant while the cascade at a positive attack angle was easier to control compared with the design attack angle when the outlet position was too far forward.
- endwall self-adaptive injection /
- corner separation /
- high speed compressor cascade /
- flow control /
- total pressure loss

HTML

图 1 叶型示意图^[22]

Figure 1. Sketch map for cascade^[22]

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图 2 计算域示意图

Figure 2. Sketch map for computation domain

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图 3 ESAI网格示意图

Figure 3. Sketch map for ESAI grid

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图 4 叶栅出口气流参数径向分布

Figure 4. Radial distribution of flow parameters at cascade outlet

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图 5 叶栅端壁极限流线的实验结果和数值结果对比

Figure 5. Contrast of experimental and numerical streamline patterns on cascade endwall

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图 6 射流角度定义

Figure 6. Definition of ESAI angles

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图 7 ESAI方案

Figure 7. Design schemes of ESAI

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图 8 可用冲角范围

Figure 8. Available attack angle range

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图 9 ESAI出口位置对叶栅总压损失系数的影响

Figure 9. Influence of ESAI outlet positions on the total pressure loss coefficient of cascade

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图 10 不同ESAI出口位置下叶栅出口气流角的径向分布

Figure 10. Radial distribution of outlet flow angle at cascade outlet with different ESAI outlet positions

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图 11 不同ESAI出口位置下叶栅出口总压损失系数的径向分布

Figure 11. Radial distribution of total pressure loss coefficient at cascade outlet with different ESAI outlet positions

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图 12 叶栅出口总压损失系数云图

Figure 12. Contours of total pressure loss coefficient at cascade outlet

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图 13 不同ESAI出口位置下叶栅出口总压损失系数的轴向分布

Figure 13. Axial distribution of total pressure loss coefficient at cascade outlet with different ESAI outlet positions

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图 14 原型叶栅的D_hs云图和吸力面极限流线图

Figure 14. Contours of D_hs and suction surface streamlines of original cascades

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图 15 不同ESAI出口位置下的D_hs云图和吸力面极限流线图

Figure 15. Contours of D_hs and suction surface streamlines with different ESAI outlet positions

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图 16 叶栅吸力面侧的体流线分布和等值面图

Figure 16. Three-dimensional streamlines distribution and contours cloud on suction surface of cascades

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图 17 5%和25%叶高的静压系数分布

Figure 17. Static pressure coefficient distribution at 5% and 25% span

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图 18 不同ESAI出口位置下的扩压因子变化

Figure 18. Variation of diffusion factor with different ESAI outlet positions

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表 1 叶栅主要设计参数

Table 1. Main design parameters of cascade

参数	数值
弦长C/mm	40
叶高H/mm	40
节距t/mm	22
设计进气角$ \,\beta_{1} $/（°）	42
气流折转角$ \Delta \beta $/（°）	42
安装角$ \gamma $/（°）	22.5
进口马赫数$ Ma_{\mathrm{in}} $	0.67
进口雷诺数$ R e_{\text {in}} $	560000

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表 2 叶栅气流参数

Table 2. Flow parameters of cascade

方案	δ/（°）		π
方案	i=0°	i=4°	i=0°	i=4°
原型叶栅	9.54	9.66	1.135	1.158
B=0.5	10.80	10.58	1.108	1.150
B=0.6	10.37	9.82	1.131	1.166
B=0.7	9.92	9.56	1.140	1.168
B=0.8	9.85	9.78	1.139	1.163
B=0.9	9.61	9.76	1.134	1.155

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