| 密炼机混炼橡胶的三维流场瞬态模拟 |
| 3D Transient Flow Field Simulation of Rubber Melt in Internal Mixer |
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| DOI： |
| 中文关键词: 密炼机 橡胶 流场 有限元分析 |
| 英文关键词: internal mixer rubber flow field finite element analysis |
| 基金项目: |
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| 中文摘要: |
| 采用密炼室真实几何形状，假设胶料全部充满，建立密炼机内非等温、非牛顿橡胶流体的三维有限元模型，数值模拟分析胶料的压力、速度、温度和剪切速率等流场参数分布。分析结果表明，转子棱顶间隙处存在着一个很大的压力梯度，楔入区胶料流向密炼室轴向中间位置，而背压区和棱顶处胶料流向相反，除了密炼室内壁附近胶料温度较高外，两个转子之间区域的胶料温度也较高。 |
| 英文摘要: |
| A 3D finite element model of the non-isothermal non-Newton rubber melt in internal mixer was built，using the real geometry of mixing chamber and assuming the chamber was completely filled.From the finite element simulation results the distribution of flow field parameters such as pressure，velocity，temperature，shear rate and so on was analyzed.It could be concluded that，large pressure gradient existed in the gap region between the rotor tip and internal wall of the mixing chamber；rubber melt in the wedging region flew into the middle area between the rotors；the flow direction of the rubber melt in the back pressure region was opposite to that in the gap region；and the temperature of the rubber melt in the gap region and in the area between the rotors was higher. |
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