华中科技大学学报（自然科学版）2024，Vol.52Issue(1)：1-7,7.DOI:10.13245/j.hust.240477
低温微肋管路快速预冷技术试验研究
Experimental study on fast chill-down technique of cryogenic micro-fin pipe
摘要
Abstract
To guide the development of cryogenic propellant rapid filling technology for launch vehicle,the mechanism of inversed annular flow pattern stability on accelerating pipeline chill-down progress was explored.A cryogenic chill-down test platform was established to evaluate the performance of micro-fin tube by comparing quenching behaviors of straight tube and micro-fin tube cases.It was found that adopting micro-fin tube could reach the time cost by over 60％.In the smooth tube case,the highest heat flux was about 22 kW/m2.Comparatively,the highest heat flux in the micro-fin tube case even reached about 45 kW/m2.Moreover,in the micro-fin tube case,the wall temperature appeared an approximately-linear decreasing tendency in the whole process.The mechanism of micro-fin tube is that a radial velocity component could be induced by introducing the micro-fin structure,and this radial strike acts on the liquid-vapor interface directly,bringing about an interface fluctuation or interface breakup,so that an earlier liquid-wall contact could be caused.Moreover,when employing a high inlet flow rate condition,a micro-fin tube with large fin interval should be suggested since the flow resistance could be reduced remarkably on the premise of heat transfer enhancement.关键词
低温预冷/反环状流/快速加注/沸腾换热/微肋管Key words
cryogenic quenching/inverse annular flow/fast fueling/boiling heat transfer/micro-fin pipe分类
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王磊,程诚,李卓伦,厉彦忠..低温微肋管路快速预冷技术试验研究[J].华中科技大学学报（自然科学版）,2024,52(1):1-7,7.基金项目
国家自然科学基金资助项目(51976151) （51976151）
上海市科学技术委员会课题(17DZ2280800). （17DZ2280800）
