脉动热管的接触角滞后和毛细滞后阻力  

CONTACT ANGLE HYSTERESIS AND CAPILLARY RESISTANCE OF PULSATING HEAT PIPE

作　　者：曲伟[1] 范春利[1] 马同泽[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100080

出　　处：《工程热物理学报》2003年第2期301-303,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.59995550-4);所长择优基金资助项目

摘　　要：脉动热管通常采用毛细管制造,液塞在运动过程中前进接触角和后退接触角随着管径、管长、充液量、传热量和工质的选择会有很大的不同,存在着毛细滞后效应的影响。本文对毛细管中单个液塞在运动过程中两个接触角和毛细滞后阻力进行了分析。结果表明,接触角滞后对于上述参数变化比较敏感,接触角滞后对于运行是不利的.可以通过毛细管的选取、工质的选择和充液率的改变等来消除毛细滞后的影响。得到的结果对于进一步完善脉动热管的物理模型有重要参考价值。The pulsating heat pipe (PHP) is commonly made of capillary tubes. During PHP operation, the advanced and receded contact angles of the liquid plugs will change with the capillary diameter, length, filling rate, transfer power and the working fluid etc., there exist the hysteresis effects. The advanced and receded contact angles and the capillary resistances are analyzed for one liquid plug in capillary tubes. The results demonstrate that the contact angle hysteresis will be affected by the above parameters sensitively, and it will make PHP operation worse. The contact angle hysteresis can be decreased by some methods. The results can supply references to the developed physical models.

关 键 词：脉动热管 接触角 毛细管 毛细滞后效应 

分 类 号：TK172.4[动力工程及工程热物理—热能工程]