Simulation of screw pumping characteristics for intermeshing counter-rotating twin screw extruders
Simulation of screw pumping characteristics for intermeshing counter-rotating twin screw extruders
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DOI：
10.1002/pen.21789
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发表时间：
2011
影响因子：
3.2
通讯作者：
Q. Jiang;Jinhai Yang;James L White
中科院分区：
文献类型：
--
作者：
Q. Jiang;Jinhai Yang;James L White
互啮合反向旋转双螺杆挤出机在聚合物加工中起着重要的作用，特别是对型材和管材的挤出，主要来自聚氯乙烯。在这些机器的流量建模方面几乎没有什么努力，其中大部分涉及将机器表示为“泄漏”的容积泵并估计泄漏。近年来，M.H. Hong等人开发了更通用的模拟该机器流动的方法，并在一些设计中进行了应用和实验验证。在这里，我们将这些努力扩展到更广泛的螺钉设计，特别是在更深的螺钉通道中，由飞行引起的横向剪切是重要的。对等温幂律流体进行了计算。结果与实验结果进行了比较。变异较大。ENG。科学。, 2011年。©2010塑料工程师协会
Intermeshing counter-rotating twin screw extruders play an important role in polymer processing, especially for the extrusion of profiles and pipe, largely from polyvinyl chloride. There has been little effort on flow modeling of these machines and most of this has involved representing the machine as a “leaky” positive displacement pump and estimating leakages. In recent years, M.H. Hong and the authors have developed more general methods of simulation of flow in this machine and both applied and experimentally verified it for a few designs. Here we extend these efforts to a broader range of screw designs, especially with deeper screw channels where transverse shearing induced by the flights is important. Calculations are done for isothermal power law fluids. The results are compared with experiment. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers