射流冲击-再生通道复合冷却性能的实验研究

李勇; 张劲; 周棋润; 张迎春; 杨森杰; 马素霞; 谢公南

doi:10.13224/j.cnki.jasp.20240205

射流冲击-再生通道复合冷却性能的实验研究

doi: 10.13224/j.cnki.jasp.20240205

李勇^{1, 2, 3,},
张劲¹,
周棋润¹,
张迎春⁴,
杨森杰¹,
马素霞^{1, 2},
谢公南⁵

1.
太原理工大学电气与动力工程学院，太原 030024
2.
煤电清洁控制教育部重点实验室，太原 030024
3.
高效储热与低碳供热山西省重点实验室，太原 030008
4.
中北大学能源与动力工程学院，太原 030051
5.
西北工业大学航海学院，西安 710129

基金项目: 山西省基础研究计划青年基金（202203021212263）；中国博士后科学基金面上项目（2023M732569）；山西省回国留学人员科研资助项目（2023-055，2023-143）；教育部“春晖计划”合作科研项目（202200075）

详细信息

作者简介:
李勇（1987-），男，副教授、硕士生导师，博士，主要从事高超声速飞行器热管理工作。E-mail：yongli@tyut.edu.cn

中图分类号: V19
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出版历程
- 收稿日期: 2024-04-07
- 网络出版日期: 2025-11-07

Experimental study on the composite cooling performance of jet impinging-regenerative channel

LI Yong^{1, 2, 3
,},
ZHANG Jin¹,
ZHOU Qirun¹,
ZHANG Yingchun⁴,
YANG Senjie¹,
MA Suxia^{1, 2},
XIE Gongnan⁵

1.
College of Electrical and Power Engineering，Taiyuan University of Technology，Taiyuan 030024，China
2.
Key Laboratory of Cleaner Intelligent Control on Coal and Electricity，Ministry of Education，Taiyuan 030024，China
3.
Shanxi Provincial Key Laboratory of High Efficiency Heat Storage and Low Carbon Heat Supply，Taiyuan 030008，China
4.
School of Energy and Power Engineering，North University of China，Taiyuan 030051，China
5.
School of Marine Science and Technology，Northwestern Polytechnical University，Xi’an 710129，China

摘要

摘要:
为了验证射流冲击-再生通道复合冷却技术的可行性，采用稳态液晶技术来实验测量环境空气仅初始横流、仅射流和射流-初始横流复合冷却方式下的努塞尔数。实验结果表明：仅射流冷却和射流-初始横流复合冷却相比于仅初始横流冷却的传热效果分别提高了207.55%～370.24%和428.35%～545.35%，并且所有流量条件下射流-初始横流复合冷却的传热性能均优于仅射流冷却的情况。射流孔数量、射流流量和初始横流流量三者之间存在最佳优化关系可使得传热性能最大化：射流可大幅提升靶面传热性能但随着流量的增加提升幅度减弱，并且射流孔数量的增加可提高靶面温度分布均匀性；射流触及靶面且动量适宜时初始横流可进一步有效提升努塞尔数；流量过小导致射流无法触及靶面时初始横流和射流的共同扰动作用也可提高传热性能。
- 超燃冲压发动机 /
- 再生冷却 /
- 射流冲击 /
- 初始横流 /
- 努塞尔数
Abstract:
To verify the feasibility of the jet impinging-regenerative channel composite cooling technology, the steady-state liquid crystal technology was used to measure the Nusselt number of ambient air under the initial crossflow cooling, jet impinging cooling, and jet impinging-initial crossflow composite cooling, respectively. The experimental results showed that the heat transfer effects of jet-impinging cooling and jet-impinging-initial crossflow composite cooling were improved by 207.55%—370.24% and 428.35%—545.35%, respectively, compared with the situation of initial crossflow cooling, and the heat transfer performance of jet impinging-initial crossflow composite cooling was better than that of jet impinging cooling under all flow conditions. The optimal relationship among the number of jet holes, jet flow rate, and initial crossflow rate can maximize the heat transfer performance: Jet impinging can greatly improve the heat transfer performance of the target surface, but the improvement amplitude decreased with the increase of flow rate, and the increase of jet holes can improve the uniformity of temperature distribution on the target surface. When the jet touched the target surface and the momentum was suitable, the initial crossflow can further increase the Nusselt number effectively. When the flow rate was too small and the jet cannot reach the target surface, the combined disturbance of the initial crossflow and jet impinging can also improve the heat transfer performance.
- scramjet engine /
- regenerative cooling /
- jet impinging /
- initial crossflow /
- Nusselt number

HTML

图 1 射流冲击-再生通道复合冷却示意图

Figure 1. Schematic diagram of jet impinging-regenerative channel composite cooling

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图 2 环境空气在射流-再生复合冷却通道内流动传热实验测试平台

Figure 2. Experimental test platform of flow and heat transfer of ambient air in a jet-regeneration composite cooling channel

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图 3 射流孔的布置形式（单位：mm）

Figure 3. Arrangement of the jet holes （unit：mm）

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图 4 稳态液晶校准图

Figure 4. Steady-state liquid crystal calibration diagram

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图 5 稳态下液晶Hue值随温度变化的曲线图

Figure 5. Hue value changes of the liquid crystal with the temperature under steady state

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图 6 光滑通道和射流冲击-初始横流通道内加热表面的努塞尔数分布

Figure 6. Nusselt number distribution on the heated wall of the smooth channel and jet impinging-initial crossflow channel

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图 7 光滑通道和带有不同射流孔数的射流冲击通道内加热表面的努塞尔数分布

Figure 7. Nusselt number distribution on the heated wall of the smooth channel and jet impinging channel with different jet numbers

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图 8 射流冲击-初始横流通道内加热表面沿程平均努塞尔数分布

Figure 8. Average Nusselt number distribution along the heated wall in the jet impinging-initial crossflow channel

下载: 全尺寸图片幻灯片

图 9 射流冲击通道内加热表面沿程平均努塞尔数分布

Figure 9. Average Nusselt number distribution along the heated wall in the jet impinging channel

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图 10 两种射流模型的全局努塞尔数：射流冲击通道和射流冲击-初始横流通道

Figure 10. Overall Nusselt numbers of two flow models: jet impinging channel and jet impinging-initial crossflow channel

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表 1 实验组合方案

Table 1. Experimental combination scheme

方案	射流流量/ （L/min）	横流流量/ （L/min）	总流量/ （L/min）
Case 1	0（N=0）	100	100
Case 2	50（N=1）	50
Case 3	25（N=2）	50
Case 4	12.5（N=4）	50
Case 5	100（N=1）	0
Case 6	50（N=2）	0
Case 7	25（N=4）	0
Case 8	0（N=0）	150	150
Case 9	75（N=1）	75
Case 10	37.5（N=2）	75
Case 11	18.75（N=4）	75
Case 12	150（N=1）	0
Case 13	75（N=2）	0
Case 14	37.5（N=4）	0
注：N表示射流孔数目。

下载: 导出CSV

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