涡轮动叶吸力面气膜冷却径向差异对比

王磊; 李海旺; 谢刚; 周志宇

doi:10.13224/j.cnki.jasp.20220349

涡轮动叶吸力面气膜冷却径向差异对比

doi: 10.13224/j.cnki.jasp.20220349

王磊^{1, 2, 3,},
李海旺^{2, 3},
谢刚³,
周志宇^{2, 3,*, ,}

1.
北京航空航天大学能源与动力工程学院，北京 100191
2.
北京航空航天大学航空发动机研究院，北京 100191
3.
北京航空航天大学航空发动机气动热力国家级重点实验室，北京 100191

基金项目: 国家自然科学基金（51906008，51822602）；中央高校基本科研业务费（YWF-19BJ-J-293）；国家科技重大专项（2017-Ⅲ-0003-0027）

详细信息

作者简介:
王磊（1988-），男，博士生，主要从事涡轮叶片气膜冷却研究

通讯作者:
周志宇（1993-），男，博士，主要从事涡轮叶片气膜冷却研究。E-mail：zzy19930929@buaa.edu.cn

中图分类号: V231.3
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- 文章访问数: 88
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- 被引次数: 0
出版历程
- 收稿日期: 2022-05-19
- 网络出版日期: 2023-10-12

Comparison for radial difference of film cooling performance on suction surface of a rotor blade

WANG Lei^{1, 2, 3
,},
LI Haiwang^{2, 3},
XIE Gang³,
ZHOU Zhiyu^{2, 3,*
, ,}

1.
School of Energy and Power Engineering，Beihang University，Beijing 100191，China
2.
Research Institute of Aero-Engine，Beihang University，Beijing 100191，China
3.
National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics，Beihang University，Beijing 100191，China

摘要

摘要:
数值仿真研究了不同吹风比和旋转雷诺数条件下涡轮叶片吸力面不同叶高位置处气膜冷却效率分布的差异。研究涉及5个直径为0.8 mm的圆柱孔，气膜孔处于涡轮叶片吸力面17.8%流向位置处，并分别处于10%、30%、50%、70%和90%叶高位置处。研究在400、600 r/min和800 r/min转速下进行，分别对应旋转雷诺数357 000、536 000和715 000。研究涉及5个吹风比：0.50、0.75、1.00、1.25和1.50。研究结果表明：靠近叶根处的气膜受叶根通道涡影响明显向叶顶方向偏转。不同叶高位置处的气膜冷却效率分布存在明显差异。旋转给冷却射流带来附加离心力和哥氏力的作用，使得吹风比和旋转雷诺数的增加对不同叶高位置的气膜尾迹偏转产生不同影响。旋转雷诺数对不同叶高位置的气膜冷却影响存在差异。
- 气膜冷却 /
- 涡轮动叶 /
- 吸力面 /
- 不同叶高位置 /
- 吹风比 /
- 旋转雷诺数
Abstract:
Simulations were carried out to investigate the difference of film cooling effectiveness distribution at different blade heights under different blowing ratios and rotational Reynolds numbers. Five cylindrical holes with a diameter of 0.8 mm were located at 17.8% streamwise location and at 10%, 30%, 50%, 70% and 90% blade height, respectively. The study was conducted under three rotational speeds of 400 , 600 r/min and 800 r/min, correspondingly to rotational Reynolds numbers of 357 000, 536 000 and 715 000, respectively. Five blowing ratios of 0.50, 0.75, 1.00, 1.25 and 1.50 were involved. Results showed that film trajectories in the near hub region were deflected a lot toward the tip under the effect of passage vortex. The distribution of film cooling effectiveness at different blade heights was different. Under the effect of centrifugal force and Coriolis force caused by rotation, the increase of blow ratio and rotating Reynolds number yielded different effects on film deflection at different blade heights. The effect of rotational Reynolds number on film cooling at different blade heights was different.
- film cooling /
- rotor blade /
- suction surface /
- different blade heights /
- blowing ratio /
- rotational Reynolds number

HTML

图 1 数值仿真流体域模型

Figure 1. Fluid domain model of the numerical simulation

下载: 全尺寸图片幻灯片

图 2 动叶模型示意图

Figure 2. Schematic of the rotor blade

下载: 全尺寸图片幻灯片

图 3 转速为600 r/min下吸力面主流静压和速度沿流向分布

Figure 3. Streamwise distributions of the mainstream static pressure and velocity on the blade suction surface at 600 r/min

下载: 全尺寸图片幻灯片

图 4 转速为600 r/min下叶栅通道内主流二次流的发展情况

Figure 4. Development of the secondary flow of the mainstream in the cascade at 600 r/min

下载: 全尺寸图片幻灯片

图 5 转速为600 r/min下不同吹风比条件下绝热气膜冷却效率分布云图

Figure 5. Contours of film cooling effectiveness distributions at different blowing ratios at 600 r/min

下载: 全尺寸图片幻灯片

图 6 转速为600 r/min下面平均气膜冷却效率

Figure 6. Spatial average film cooling effectiveness at 600 r/min

下载: 全尺寸图片幻灯片

图 7 转速为600 r/min下展向平均气膜冷却效率分布

Figure 7. Spanwise average film cooling effectiveness distributions at 600 r/min

下载: 全尺寸图片幻灯片

图 8 M=0.75，1.50时不同旋转雷诺数条件下绝热气膜冷却效率分布云图

Figure 8. Contours of film cooling effectiveness distributions at different rotational Reynolds number at M=0.75 ， 1.50

下载: 全尺寸图片幻灯片

图 9 M=0.75，1.50时不同旋转雷诺数条件下面平均气膜冷却效率

Figure 9. Spatial average film cooling effectiveness at different rotational Reynolds number at M=0.75, 1.50

下载: 全尺寸图片幻灯片

图 10 不同旋转雷诺数条件下叶栅通道内气膜孔下游二次流的分布（M=0.75）

Figure 10. Distributions of the secondary flow in the cascade at different rotational Reynolds number (M=0.75)

下载: 全尺寸图片幻灯片

表 1 主流和冷却射流工况设置

Table 1. Working condition setting of mainstream and coolant

转速/（r/min）	（y/H）/%	主流流速/（m/s）	冷气质量流量/10⁻³ （g/s）
转速/（r/min）	（y/H）/%	主流流速/（m/s）	M=0.50	M=0.75	M=1.00	M=1.25	M=1.50
400	10	7.30	1.400	2.101	2.801	3.501	4.201
	30	8.68	1.664	2.496	3.329	4.161	4.993
	50	7.84	1.504	2.256	3.009	3.761	4.513
	70	6.88	1.319	1.978	2.637	3.297	3.956
	90	5.79	1.110	1.665	2.219	2.774	3.329
600	10	13.00	2.494	3.740	4.987	6.234	7.481
	30	14.02	2.688	4.032	5.376	6.720	8.064
	50	12.55	2.406	3.609	4.812	6.014	7.217
	70	10.82	2.075	3.113	4.151	5.188	6.226
	90	9.00	1.727	2.590	3.454	4.317	5.180
800	10	18.63	3.573	5.360	7.146	8.933	10.719
	30	19.45	3.729	5.594	7.458	9.323	11.188
	50	17.31	3.319	4.979	6.639	8.298	9.958
	70	14.82	2.841	4.262	5.683	7.104	8.524
	90	12.20	2.340	3.510	4.680	5.850	7.020

下载: 导出CSV

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