摘要
根据侧向进汽凝汽器壳侧的蒸汽-凝结液两相流流动特点,利用现有实验数据建立了考虑液相重力及汽流方向对溢流影响的阻力系数与汽侧换热系数的关联式,并将其用于侧向进汽凝汽器汽相流动与传热的数值模拟方法与程序。采用所发展的程序预测了一台实验凝汽器的工作特性。计算结果与现有实验结果较一致,证实了所用物理模型与计算方法的适用性,同时也揭示了侧向进汽凝汽器流动与传热的一般特性。
Through analysing the influence of steam flow direction on the liquid form and motion behavior in the condenser shell side , the physical model for existing numerical simulation program of condenser is improved by introducing the correlations for flow resistance and condensation heat exchange coefficient in which the influences of steam flow direction are considered according to the available experimental data. Thus a more suitable and genereal condenser simulation approach is presented and a new condenser calculation programe is developed .With the experimental data of a pannier- arrangement experimental condenser, the adaptability of the new condenser simulation approach is verified. General characteristics of this type of condenser are also revealed.
出处
《汽轮机技术》
北大核心
2005年第1期45-48,共4页
Turbine Technology
关键词
汽轮机
凝汽器
流动
传热
数值计算
steam turbine
condenser
flow
heat transfer
numerical simulation
