摘要
由于两相临界流在压水反应堆安全分析中的重要性，在过去的４０年内，两相临界流一直是一个活跃的分支学科。本文对压水堆失水事故常用的两相临界流均匀平衡模型、滑移模型、考虑相间热力学非平衡效应的简化模型及两流体模型做了综述。结论是到目前为止，没有一个数学模型能准确预测各种参数范围、各种通道形状的临界流量。特定的模型只能适用于特定的情况。本文对非平衡两相流中汽泡成核、汽泡生长、相界面间质量、动量、能量交换的机理给予了更多的关注。
In the past forty years,two-phase critical flow has always been an active research subject due to its particular importance in the safety analysis of water cooled nuclar reactors.In this paper,review is made on the two-phase critical homogcneous equilibrium model,slip model,thermal nonequilibrium model and two-fluid model,logether with detailed discussions on the thermal nonequilibrium dynamics rclated to two-fluid model,It is concluded that so far. no numerical model can predict accurately the mass flow rates in wide parameter regions and for ilny channel forms,It is expected that if some mechanisms such as bubble nucleation,bubble growth and interphase heat transfer are better understood, the prediction dcctiracy of two-phase critical model may be in- Creased.
出处
《力学进展》
EI
CSCD
北大核心
1995年第1期77-84,共8页
Advances in Mechanics
关键词
两相临界流
数学模型
非平衡
两相流
two- phase critical flow
numerical model
two-phase nonequilibrium
