摘要
采用汽泡边界层的形成和长大、造成近壁区汽泡雍塞, 从而阻碍汽泡层和主流区的湍流交换的机理, 建立了圆管中低含汽率临界热流密度(CHF) 的预测理论模型。经过与Thompson 和MacBeth的CHF 数据库比较, 表明在圆管内中低含汽率工况下, 预测结果和实验数据符合得较好, 本文所提出的模型可用于圆管内中低含汽率工况下CHF 值的预测。
A theoretical model is proposed to predict CHF in round tube under the condition of low or intermediate quality, the mechanism adopted is formation and growth of bubble layer resulting in limitation of turbulent enthalpy interchange between the bubbly layer and core regions Agreement is obtained between predictions and experimental data for water flowing in uniformly heated tubes from CHF table compiled by Thompson and MacBeth
出处
《核动力工程》
EI
CAS
CSCD
北大核心
1999年第5期409-412,共4页
Nuclear Power Engineering
关键词
圆管
含汽率
临界热流密度
数值预测
Round tube Low Intermediate quality Critical heat flux Numerical prediction Mathematic model