| 装有多孔介质的封闭腔体中热驱动换热的数值研究 |
| |
| 引用本文： | 夏婕,常海萍,杨敏.装有多孔介质的封闭腔体中热驱动换热的数值研究[J].南京航空航天大学学报,2005,37(6):699-703. |
| |
| 作者姓名： | 夏婕 常海萍 杨敏 |
| |
| 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： | 国家自然科学基金（50276027）资助项目;国防基础科研基金（J1400D001）资助项目. |
| |
| 摘 要： | 以涡轮叶片超级冷却技术为研究背景,用数值计算的方法,模拟了离心力场下装有多孔介质的封闭腔体中的热驱动换热现象。计算结果表明,在封闭腔体中加入大孔隙率多孔介质后确实能起到强化换热的效果,采用的固体介质的导热性越好,封闭腔体中流体的热驱动能力越强,换热效果越好。而且采用导热性比较好的固体介质时,在大孔隙率范围内,随着孔隙率的减少,封闭腔体中流体的热驱动能力和换热均得到增强。
|
| 关 键 词： | 传热传质 热驱动 数值研究 多孔介质 封闭腔体 |
| 文章编号： | 1005-2615(2005)06-0699-05 |
| 收稿时间： | 2004-11-24 |
| 修稿时间： | 2005-03-17 |
Numerical Simulation on Thermally Driven Heat Transfer in Enclosure Filled with Porous Medium |
| |
| XIA Jie,CHANG Hai-ping,YANG Min.Numerical Simulation on Thermally Driven Heat Transfer in Enclosure Filled with Porous Medium[J].Journal of Nanjing University of Aeronautics & Astronautics,2005,37(6):699-703. |
| |
| Authors: | XIA Jie CHANG Hai-ping YANG Min |
| |
| Abstract: | Based on the exploration of the turbine blade super cooling technology,a numerical simulation is used to investigate the thermally driven heat transfer phenomenon in an enclosure filled with the porous medium in a centrifugal force field.Results show that the enclosure can achieve better heat transfer effect after filled with the high porosity porous medium.The better the heat transfer effect is,the stronger the thermally driven power is.Thus when the solid medium with good conduction is used,the thermally driven power and the heat transfer effect can be enhanced with the decrease of the porosity under high porosity. |
| |
| Keywords: | heat and mass transfer thermally driven numerical study porous medium enclosure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
