双转子连续混炼机不同转子的混炼模拟

Mixing simulation of twin-rotor continuous mixer with different rotors

采用三维绘图软件PRO/E对双转子连续混炼机的转子进行了结构设计,利用GAMBIT对其进行网格划分及边界条件设定,并运用有限元流体分析软件POLYFLOW对转子部分的混炼过程进行了模拟分析,比较了转子转过不同角度时沿轴向距离的剪切速率、平均速度、黏度以及压力。分析得出,螺棱交汇点位置在其长度方向1/3处的转子存在着很明显的反向压力,即可以产生明显的有利于混炼的反向流动。该研究将有助于优化转子结构,从而进一步提高混炼效果。

Using three-dimensional plotting software PRO / E to design the structure of twin-rotor continuous mixer＇s rotor, taking GAMBIT to divide grid and set boundary conditions, and using finite element fluid analysis software POLYFLOW to simulate the process of rotor mixing, compared the sheer rote, average speed, viscosity and pressure of the rotor turned at different angles along the axial distance. According to the analysis, if is pointed out that the rotor with the wing intersection located at the direction of its 1/3 length existed reverse stress obviously, namely if could have significant reverse flow for mixing. The study will help to optimize the rotor structure, which con further enhance the mixing effect.