哈尔滨工程大学学报2012，Vol.33Issue(12)：1474-1479,6.DOI:10.3969/j.issn.1006-7043.201112040
窄环形通道ONB发生机理的热流体理论分析
Analysis of ONB developing mechanism in narrow annular channels based on the theory of thermofluid dynamics
摘要
Abstract
The research investigation of the difficulties of grasping the developing characteristics of onset of nucleate boiling ( ONB ) in narrow channels, and ONB developing mechanism in narrow annular channels under different cycling modes was conducted based on the thermal drag and thermal roundabout flow mechanism. The research study results indicated that, the increase of thermal drag might delay the occurrence of ONB, while the increase of thermal roundabout flow may advance the occurrence of ONB, and the thermal drag and thermal roundabout flow exist interdependently. The influences on occurrence of ONB are determined by the combination effects of channel structures and flow characteristics. Based on the appropriate natural and forced circulation models applied in narrow annular channels, the influences of flow mass, inlet sub-cooling and pressure on the occurrence of ONB have been analyzed thoroughly. Results showed that the ONB occurrences of both natural and forced circulations in narrow annular channels were delayed as mass flow or pressure was increased. As the temperature of inlet fluid increased, the occurrences of ONB in natural and forced circulations were both advanced. The occurrences of ONB in natural circulations preceded those in forced circulations as mass flow, inlet temperature, and pressure changed.关键词
窄环形通道/过冷沸腾起始点/发生机理/热阻力/热绕流Key words
narrow annular channel/ ONB/ developing mechanism/ thermal drag/ thermal roundabout flow分类
能源科技引用本文复制引用
周涛,盛程,刘平,张蕾,洪德训,黄彦平,肖泽军..窄环形通道ONB发生机理的热流体理论分析[J].哈尔滨工程大学学报,2012,33(12):1474-1479,6.基金项目
国家自然科学基金资助项目(50976033) （50976033）
中国核动力研究设计院空泡物理和自然循环国家重点实验室基金资助项目(2007-109). （2007-109）
