| 引用本文: | 尹亮,丁杰,刘伟强.再生冷却通道结构参数对碳氢燃料流量分配影响.[J].国防科技大学学报,2022,44(4):151-157.[点击复制] |
| YIN Liang,DING Jie,LIU Weiqiang.Effect of structural parameters of regenerative cooling channels on hydrocarbon fuel flow distribution[J].Journal of National University of Defense Technology,2022,44(4):151-157[点击复制] |
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| 再生冷却通道结构参数对碳氢燃料流量分配影响 |
| 尹亮1,丁杰1,刘伟强2 |
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(1. 湖南文理学院 机械工程学院, 湖南 常德 415000;2. 国防科技大学 空天科学学院, 湖南 长沙 410073)
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| 摘要: |
| 以液体火箭发动机再生冷却技术为背景,采用数值模拟方法对Z-type型并联通道流量分配特性进行研究,分析了通道数、通道截面形状及入口汇流结构对流量分配特性的影响。研究结果表明:在冷却通道总流通面积相同的情况下,随着再生冷却系统通道数的增加,流量分配不均匀度系数从2.59%降低至0.5%,相同流通面积下增加通道数可以有效提高流量分配的均匀程度。通道截面形状对流量分配不均匀度系数影响不大,其影响主要表现在通道内部流体速度分布及换热面积上。从换热效果看,梯形截面构型要优于矩形构型。入口汇流结构倾斜角有利于流量的均匀性分布。该研究对于再生冷却通道结构设计具有一定参考价值。 |
| 关键词: 再生冷却 流量分配 通道数 截面形状 汇流结构 换热效果 |
| DOI：10.11887/j.cn.202204016 |
| 投稿日期：2021-06-16 |
| 基金项目:湖南省自然科学基金资助项目(2020JJ5395)；常德市科技创新发展指导性计划资助项目(2020ZD27) |
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| Effect of structural parameters of regenerative cooling channels on hydrocarbon fuel flow distribution |
| YIN Liang1, DING Jie1, LIU Weiqiang2 |
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(1. College of Mechanical Engineering, Hunan University of Arts and Science, Changde 415000, China;2. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Based on the regenerative cooling technology of liquid rocket engine, the flow distribution characteristics of Z-type parallel channels were studied by numerical simulation method. The effects of channel number, channel section shape and entrance confluence structure on the flow distribution characteristics were analyzed. The results show that the non-uniformity coefficient of flow distribution decreases from 2.59% to 0.5% with the increase of the number of channels in the regenerative cooling system. Increasing the number of channels under the same flow area can effectively ensure the uniformity of flow distribution. The channel section shape has little influence on the non-uniformity coefficient of flow distribution, which is mainly reflected in the flow velocity distribution and heat transfer area in the channel, and the heat transfer effect of the trapezoidal configuration is better than that of the rectangular configuration. The entrance confluence structure is beneficial to the uniform of flow distribution. The research has a certain reference significance for the structural design of regenerative cooling channel. |
| Keywords: regenerative cooling flow distribution channel number channel section shape confluence structure heat exchange efficiency |
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