原子能科学技术2016，Vol.50Issue(5)：805-811,7.DOI:10.7538/yzk.2016.50.05.0805
单钩波形板分离器内二次携带机理分析
Analysis of Re-entrainment Mechanism in Single-hooked Wave-plate Separator
杨雪龙 1王永 2冯靖 1王伟 2王先元1
作者信息
- 1. 核动力运行研究所,湖北武汉 430074
- 2. 中核武汉核电运行技术股份有限公司,湖北武汉 430223
- 折叠
摘要
Abstract
The theory analysis and three-dimensional numerical simulations were carried out to study the re-entrainment mechanism in a single-hooked wave-plate separator under operating conditions .The Realizable k-εmodel was utilized to calculate the steam flow fields of the separator .The discrete phase model with eddy-interaction model was adopted to predict the trajectories of the droplets .The equations of the film motion were solved to obtain the film velocity and thickness distribution .Four potential regimes of secondary droplet formation were analyzed theoretically .The results show the possibili-ty of droplet breakup by aerodynamics and splashing by droplet impinging the film is low ,but higher than that of the cold conditions .The film exists mainly on the first two stages and thickens and moves downwards with increasing the steam velocity or wetness at the separator inlet . The film stripping and separation are proved to be the main reasons for the re-entrainment and unified with one discriminant .Compared with the film stripping ,the film separation at the peak of the hook occurs more easily .关键词
波形板分离器/二次携带/水滴/水膜分离/水膜剥落Key words
wave-plate separator/re-entrainment/droplet/film separation/film strip-ping分类
能源科技引用本文复制引用
杨雪龙,王永,冯靖,王伟,王先元..单钩波形板分离器内二次携带机理分析[J].原子能科学技术,2016,50(5):805-811,7.
