| 抑制自然对流的可视化实验研究 |
| |
| 引用本文： | 任建勋,梁新刚,陈泽敬,刘云龙,过增元,胡桅林.抑制自然对流的可视化实验研究[J].清华大学学报(自然科学版),1998(8). |
| |
| 作者姓名： | 任建勋 梁新刚 陈泽敬 刘云龙 过增元 胡桅林 |
| |
| 作者单位： | 清华大学工程力学系 |
| |
| 基金项目： | 国家“八六三”高技术项目,国家自然科学基金 |
| |
| 摘 要： | 为了验证抑制自然对流的努谢尔数保持技术的正确性，发展了一种大空间气流流场的可视化技术。采用蚊香燃烟示踪气流，激光片光源照亮烟气固体微粒，以显示在不同尺寸模型中不同Ｒｅ数和Ｇｒ数下的流场特征。较好地解决了大面积的恒热流加热的实验技术问题，同时在实现均匀来流、减小烟气扩散等方面也作出了探索；实验获得了十分清晰的模型中的流场可视化照片。两种热缩比模型中的流场的观察结果表明，合理地采用适当尺寸的缩小模型，确实可以在地面消除重力对流动与换热的影响。
|
| 关 键 词： | 微重力环境 模拟 流场 可视化 |
Vsualization experiment research on gravity elimination technique |
| |
| REN Jianxun,LIANG Xingang,CHEN Zejing,LIU Yunlong,GUO Zengyuan,HU Weilin.Vsualization experiment research on gravity elimination technique[J].Journal of Tsinghua University(Science and Technology),1998(8). |
| |
| Authors: | REN Jianxun LIANG Xingang CHEN Zejing LIU Yunlong GUO Zengyuan HU Weilin |
| |
| Institution: | REN Jianxun,LIANG Xingang,CHEN Zejing,LIU Yunlong,GUO Zengyuan,HU Weilin Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China |
| |
| Abstract: | In order to prove the correctness of the natural convetion suppression technique, a smoking visualization technique is developed for observing the pattern of air flow in large scale thermal models of space station cabin. Special methods are used to obtain uniform heat flux on a large area. At the same time, a honeycomb duct rectifier is fabricated to reduce the turbulence of the smoke. Clear photos of the flow patterns show that the effect of gravity on the air flow and heat transfer in the models can be eliminated when the dimension of the model is properly reduced. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
