中文摘要：

采用软件FLUENT建立密炼机部分充满胶料流动的二维等温有限元模型,通过对胶料自由界面的数值模拟追踪,分析流体的流动状态,借助于混合指数和剪切应力分析评估转子的分散混合效率,并将部分充满密炼机流场与全充满密炼机流场进行对比。结果表明：相对于全充满密炼机的稳定流场,部分充满密炼机流场流动非常复杂;全充满密炼机的分散混合能力优于部分充满密炼机,但是所需的扭矩输入更大。

英文摘要：

The 2D finite element model of flow field in partially filled and full-filled internal mixer at constant temperature by using the package FLUENT was investigated. By numerical simulating the free interface of compound,the flow state of fluid was analyzed,and the mixing efficiency of rotors was quantified in terms of shear stresses and mixing index generated in the flow field. The results showed that,compared with the fullfilled internal mixer,the flow field became more complicated in partially filled internal mixer. The full-filled internal mixer seemed to provide better flow field characteristics for mixing,but the torque input to operate the machine was higher than that of the partially filled internal mixer.