中国空间科学技术

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反向式毛细芯运行机理的分析

张加迅,侯增祺   

  1. 北京空间飞行器总体设计部!北京100086,北京空间飞行器总体设计部!北京100086
  • 发布日期:2000-12-25

Analysis of the Operational Mechanism of the Inverted Meniscus Type Capillary Wick

Zhang Jiaxun Hou Zengqi (Institute of Spacecraft System Engineering,Beijing 100086)   

  • Published:2000-12-25

摘要： 结合对毛细抽吸两相回路的研究 ,以反向式毛细芯为研究对象 ,对其在系统内部扰动下的运行机理进行了理论分析 ,并结合实际反向式蒸发器 ,对影响其正常运行的因素进行了探讨。经分析知 ,渗透率的降低有利于抑制毛细芯内所产生的波动 ,但过低的渗透率会导致系统烧干 ;孔隙率的降低会明显增大毛细芯工作时的波动 ;此外 ,最小毛细半径对毛细芯的工作能力和抑制波动的能力有直接影响

关键词: 毛细管, 蒸发器, 扰动, 数学分析

Abstract: With the study of the CPL(Capillary Pumped Loop),the operational mechanism of the inverted meniscus type capillary wick under the disturbance is investi- gated.By the analysis,it is concluded that,the decrease of the permeability of the wick is helpful to reduce the oscillation in the wick during the operation,however,very low permeability can lead to dry-out of the wick.Also,it is obtained that low porosity has a negative effect on the operation Additionally,it can be known that,the minimum capillary radius of the wick is of great importance to the working ability of the wick and the ability of the wick to dampen the oscillation during the operation.