| 致密孔阵气膜冷却绝热温比和对流换热系数的数值研究 |
| |
| 引用本文： | 谢浩,张靖周.致密孔阵气膜冷却绝热温比和对流换热系数的数值研究[J].航空动力学报,2009,24(6):1229-1235. |
| |
| 作者姓名： | 谢浩 张靖周 |
| |
| 作者单位： | 1. 南京师范大学,动力工程学院,南京,210042;南京航空航天大学,能源与动力学院,南京,210016
2. 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(03C52019) |
| |
| 摘 要： | 采用数值模拟方法研究了气膜孔叉排方式下孔间距和吹风比对致密孔阵气膜冷却绝热温比和对流换热系数的影响.结果表明:减小相邻孔间距与孔径比或增加吹风比,平均壁面温度就越低,且温度分布更为均匀,绝热温比提高,热侧壁面平均换热系数也随之增大;相对于增加气膜孔阵的密集程度而言,吹风比的增加所带来的绝热温比改善和对流换热系数增加幅度略有减弱.特别是当吹风比大于1以后,吹风比的影响程度比较微弱.
|
| 关 键 词： | 气膜冷却 绝热温比 对流换热 数值模拟 |
| 收稿时间： | 2008/5/30 0:00:00 |
| 修稿时间： | 8/9/2008 12:00:00 AM |
Numerical study on adiabatic wall cooling effectiveness and convective heat transfer coefficient of effusion cooling |
| |
| XIE Hao and ZHANG Jing-zhou.Numerical study on adiabatic wall cooling effectiveness and convective heat transfer coefficient of effusion cooling[J].Journal of Aerospace Power,2009,24(6):1229-1235. |
| |
| Authors: | XIE Hao and ZHANG Jing-zhou |
| |
| Institution: | 1.School of Power Engineering;Nanjing Normal University;Nanjing 210042;China;2.College of Energy and Power Engineering;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
| |
| Abstract: | The influences of the adjacent holes spacing and blowing ratio on the adiabatic wall cooling effectiveness and convective heat transfer coefficient of effusion cooling with the film holes in staggered arrangement were numerically investigated.The results show that,with the decrease of adjacent holes spacing or the increase of blowing ratio,the average temperature in the film holes region reduces and the temperature distribution uniformity is improved for all the calculated cases,so that the adiabatic wall c... |
| |
| Keywords: | film cooling adiabatic wall cooling effectiveness convective heat transfer numerical simulation |
| 本文献已被 CNKI 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》下载免费的PDF全文 |
|
