罗茨泵极限真空度及其预抽时间预测模型研究

李玉龙,宋陆昊,刘天涯,宋安然

Research on prediction models for limiting vacuum degree and its pre-pumping time of Roots pump

Yulong LI,Luhao SONG,Tianya LIU,Anran SONG

表3 仿真中介质参数和边界参数设置

Table 3 Setting of medium parameters and boundary parameters during simulation

参数 数值 介质初始动力黏度/(Pa·s) 1.853×10⁻5 介质初始密度/(kg·m-3) 1.293 介质初始体积弹性模量/Pa 1.4×105 转速/(rad·s-1) 104.72 进口压力/Pa 101 325 出口压力/Pa 101 325 转动数量/次 300 每叶迭代数量/次 500