| 不同结构的冷却管脉冲射流流动响应特性 |
| |
| 引用本文： | 蔡可信,毛军逵,徐启明,毕帅,王磊,周洁. 不同结构的冷却管脉冲射流流动响应特性[J]. 航空动力学报, 2022, 37(3): 523-533. DOI: 10.13224/j.cnki.jasp.20200372 |
| |
| 作者姓名： | 蔡可信 毛军逵 徐启明 毕帅 王磊 周洁 |
| |
| 作者单位： | 南京航空航天大学 能源与动力学院，南京 210016 |
| |
| 基金项目： | 航空科学基金（201928052002） |
| |
| 摘 要： | 探究了结构参数对脉冲射流经冷却管内流动响应规律.在脉冲频率为1Hz,雷诺数为5000,脉冲射流占空比为50％的气动参数下,对冷却管管径、射流孔孔径、孔间距的变化对脉冲射流流动响应特性带来的影响依次分析,对结构参数对脉冲射流在冷却管内流动响应特性产生影响的内在机制进行综合阐述.针对上述结构参数拟合出冷却管射流质量系数随冷...
|
| 关 键 词： | 冷却管 脉冲射流 容腔效应 射流孔:经验关系式 |
| 收稿时间： | 2020-09-04 |
Pulse jet flow response characteristics of cooling pipe with different structures |
| |
| CAI Kexin,MAO Junkui,XU Qiming,BI Shuai,WANG Lei,ZHOU Jie. Pulse jet flow response characteristics of cooling pipe with different structures[J]. Journal of Aerospace Power, 2022, 37(3): 523-533. DOI: 10.13224/j.cnki.jasp.20200372 |
| |
| Authors: | CAI Kexin MAO Junkui XU Qiming BI Shuai WANG Lei ZHOU Jie |
| |
| Affiliation: | College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China |
| |
| Abstract: | The flow response law of pulse jet through cooling pipe with structural parameters was explored. Under the aerodynamic parameters of pulse frequency of 1 Hz，Reynolds number of 5 000 and pulse jet duty ratio of 50%，the influences of cooling pipe diameter，jet hole diameter，hole spacing on the pulse jet flow response characteristics were analyzed successively and the internal mechanism of the influence of structural parameters on the flow response characteristics of pulse jet in the cooling pipe was comprehensively described.In view of the structural parameters，empirical formulae of the cooling pipe jet quality coefficients with cooling pipe diameter，jet hole diameter，hole spacing were fitted to optimize the array of pulse jet cooling pipe chamber，providing a reference for structure design.It was found that the response time and hysteresis time of cooling pipe jet velocity decreased with the increase of cooling pipe diameter，hole spacing and jet hole diameter.With the increase of cooling pipe diameter，the decrease of jet hole diameter and hole spacing，the pressure in the cooling pipe and the jet velocity coefficient increased，and the flow capacity decreased. |
| |
| Keywords: | cooling pipe pulse jet capacitive cavity effect jet hole empirical formula |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
|
点击此处可从《航空动力学报》下载全文 |
