| 重力条件对喷雾冷却换热特性影响的研究 |
| |
| 引用本文： | 程文龙,韩丰云,赵锐,马然,范含林.重力条件对喷雾冷却换热特性影响的研究[J].宇航学报,2011(10). |
| |
| 作者姓名： | 程文龙 韩丰云 赵锐 马然 范含林 |
| |
| 作者单位： | 中国科学技术大学热科学和能源工程系;中国空间技术研究院总体部; |
| |
| 基金项目： | 国家自然科学基金(50876096); 国防科工委十一五民用航天预先研究项目(C3220060314) |
| |
| 摘 要： | 喷雾冷却是一种高效的高热流密度散热方式,在空间热控领域具有重要的应用前景。本文基于液膜动力学、气泡动力学和传热学的基本原理,建立了描述微重力条件下喷雾冷却传热特性的理论模型。利用模型模拟的方法,对以水作为工质的微重力条件下喷雾冷却系统的被冷却表面温度分布、冷却曲线等因素进行了分析,分析结果显示:在单相区,重力条件对喷雾冷却的换热特性和表面温度分布不均匀性的影响较小;在两相区,由于微重力条件下气泡难以脱离等因素的影响,使得喷雾冷却的换热能力明显弱于常重力条件下的换热能力,并且被冷却表面的温度不均匀性增大。
|
| 关 键 词： | 喷雾冷却 热控 传热 气泡动力学 |
Effect Study of Gravity Condition on Heat Transfer Characteristics of Spray Cooling |
| |
| CHENG Wen-long,HAN Feng-yun,ZHAO Rui,MA Ran,FAN Han-lin.Effect Study of Gravity Condition on Heat Transfer Characteristics of Spray Cooling[J].Journal of Astronautics,2011(10). |
| |
| Authors: | CHENG Wen-long HAN Feng-yun ZHAO Rui MA Ran FAN Han-lin |
| |
| Institution: | CHENG Wen-long1,HAN Feng-yun1,ZHAO Rui1,MA Ran1,FAN Han-lin2(1.University of Science and Technology of China,Hefei 230027,China,2.China Academy of Space Technology,Beijing 100094,China) |
| |
| Abstract: | Spray cooling is a promising candidate to provide high rate heat flux removal in spacecraft thermal control.A mathematical model of spray cooling in microgravity heat transfer characteristics was presented based on the fundamentals of dynamics and heat transfer.The heat transfer characteristics including spray cooling curve,temperature gradient on the heating surface and et al in microgravity were obtained by model analysis.The analyzed results shows that in one phase region,gravity has little effect in hea... |
| |
| Keywords: | Spray cooling Thermal control Heat transfer Bubble dynamics |
| 本文献已被 CNKI 等数据库收录！ |
|
