本文利用我国第22颗返回式卫星实验研究了微重力条件下池沸腾临界热流现象,发现基于流体动力学不稳定性机制的LD-Zuber模型可以很好地预测不同重力条件下的池沸腾临界热流变化趋势,尽管热丝无量纲半径比该模型的适用范围扩大了3～4个数量级.这和地面常重力环境中关于临界热流尺度效应的研究结果有很大差异,表明在Bond数很小时,热丝无量纲半径已不再是描述临界热流尺度效应的唯一参数.此外,本文提出了"极限核化尺寸"的概念,来解释了不同条件下临界热流的变化特征.
参考文献
| [1] | Zuber N .Hydrodynamic Aspect of Boiling Heat Transfer[AECU-4439][R].Research Laboratory Los Angeles and Ramo-Woolbridge Corporation,UCLA,1959. |
| [2] | Kutatelatse S S .Heat Transfer in Condensation and Boiling[AEC-tr-3770][R].,1959. |
| [3] | 林瑞泰.沸腾换热[M].北京:科学出版社,1988 |
| [4] | Lienhard J H;Dhir V K .Hydrodynamic Prediction of Peak Pool Boiling Heat Fluxes from Finite Bodies[J].Journal of Heat Transfer,1973,95:152-158. |
| [5] | Di Marco P;Grassi W .Motivation and Results of a LongTerm Research on Pool Boiling Heat Transfer in Low Gravity[J].International Journal of Thermal Sciences,2002,41:567-585. |
| [6] | Straub J .Boiling Heat Transfer and Bubble Dynamics in Microgravity[J].Advances in Heat Transfer,2001,35:57-172. |
| [7] | Wan SX;Zhao JF;Liu G.TCPB Device:Description and Preliminary Ground Experimental Results[A].Bremen,Germany,2003 |
| [8] | 赵建福,万士昕,刘刚,闫娜.微重力池沸腾实验研究[J].工程热物理学报,2007(03):454-456. |
| [9] | Ivey H J;Morris D J.Critical Heat Flux of Saturation and Subcooled Pool Boiling in Water at Atmospheric Pressure[A].Chicago,IL,1966:129-142. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%