原子能科学技术2016，Vol.50Issue(6)：1014-1020,7.DOI:10.7538/yzk.2016.50.06.1014
自然循环闪蒸不稳定诱发的水击现象实验研究
Experimental Investigation of Flashing Instability Induced Water Hammer in Open Natural Circulation System
摘要
Abstract
An experimental study on flashing instability induced water hammer in open natural circulation system was performed.The result shows that on some flashing instability conditions,flashing start position moves periodically along the rising channel,which leads periodical change of saturation temperature in the horizontal tube at the underpart of loop,and periodical sudden flashing and condensation in horizontal tube finally.Violent condensation results in drastic shrinkage of vapor and violent strike of the surrounding water,and induces water hammer.The water hammer region and the corresponding boundary were founded by experiment.In addition,the influence factors,such as the heating tube outlet temperature,the inlet sub-cooling and the heating power,the length of upward channel and existence of non-condensable gas on water hammer were examined,which can provide design considerations of open natural circulation system.关键词
自然循环/闪蒸不稳定/水击/冷凝/实验研究Key words
natural circulation/flashing instability/water hammer/condensation/experiment investigation分类
能源科技引用本文复制引用
侯晓凡,孙秋南,范广铭,孙中宁,李伟..自然循环闪蒸不稳定诱发的水击现象实验研究[J].原子能科学技术,2016,50(6):1014-1020,7.基金项目
国家高技术研究发展计划(863计划)资助项目(2012AA050906) （863计划）
