矩形小流道受限汽泡流及环状流区域沸腾传热模型研究  

Study of Boiling Heat Transfer Model of Confined Bubble Flow and Annular Flow in a Heating Rectangular Mini-Channel

作　　者：于忠斌 李毅[2] 田野 Yu Zhongbin;Li Yi;Tian Ye(Naval Armaments Division,Chengdu,610213,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]海军装备部,成都610213 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2021年第4期51-55,共5页Nuclear Power Engineering

摘　　要：为探析矩形小流道受限汽泡流及环状流区域沸腾传热机理,本文基于理论推导,从受限汽泡典型特征出发,探明了受限汽泡流几何结构;基于时间加权平均方法,确定了受限汽泡区及液塞区在受限汽泡流所占权重;基于一维导热等理论和积分方法,建立了液膜蒸发换热系数计算方法,并将其应用于环状流区域。综合上述方法,提出了一种新的受限汽泡流及环状流区域沸腾传热模型——双区域模型,该模型适用范围为:雷诺数(Re)为2300~5373,普朗特数(Pr)为2.75~19.8,毛细数(Ca)为0.000835~0.002767。the Based on the typical characteristics of the restricted bubble,the geometric structure of confined bubble flow is investigated.Based on the time weighted average method,the weights of the confined bubble and the liquid plug area in the confined bubble flow are determined.Based on one-dimensional heat conduction theory and integral method,a method for calculating the evaporation heat transfer coefficient of liquid film was established and applied to the annular flow area.The model works with Re range of 2300 to 5373,Pr range of 2.75 to 19.8,and Ca range of 0.000835 to 0.002767.

关 键 词：受限汽泡流 环状流 沸腾传热 矩形小流道 

分 类 号：TL331[核科学技术—核技术及应用]