Evaluation of the mixing performance for one novel twin screw kneader with particle tracking
Evaluation of the mixing performance for one novel twin screw kneader with particle tracking
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一种具有颗粒跟踪功能的新型双螺杆捏合机的混合性能评估
DOI：
10.1002/pen.23786
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发表时间：
2014-10
影响因子：
3.2
通讯作者：
Zhou D. M.
中科院分区：
文献类型：
--
作者：
Liang X. L.;Chen D. B.;Yang Y. L.;Zhou D. M.
提出了一种新型的连续双螺杆捏合机。螺杆转子端截面由凸弧和摆线曲线组成，并给出了转子的轮廓。采用有限元法和网格叠加技术对新型双螺杆捏合机的混合性能进行了数值模拟。采用颗粒跟踪技术对流场进行统计分析，研究几何参数和工作参数对混合性能的影响。研究示踪颗粒的分散混合性能，具体研究示踪颗粒的最大剪切速率、最大剪切应力、最大混合指数、停留时间分布（RTD）和RTD密度函数，并结合混合指数和剪切应力对分散混合进行评价。结果表明：转子中心距的变化对分散混合性能影响不大，转子导程对最大剪切应力和最大剪切速率影响不大，而对混合指数、累积RTD和RTD密度函数有明显影响。转子转速对混合性能有明显影响，物料的平均停留时间大大缩短，混合能力减弱，而转子的自清洁性能随着转速的增加而明显提高。变异较大。ENG。科学。中文信息学报，44(4):2407 - 2419,2014。2013中国塑料工程学会
In this article, a novel continuous twin-screw kneader was proposed. The end-cross section of the screw rotor consists of convex arcs and cycloidal curves and the rotors profiles were presented. The mixing performance of the novel twin screw kneader was simulated using finite element method (FEM) combined with mesh superimposition technique (MST). Statistical analysis was carried out for flow field using particle tracking technique to research the effect of geometry parameters and working parameters on the mixing performance. To study the dispersive mixing performance, specifically the maximum shear rate, maximum shear stress, maximum mixing index, residence time distribution (RTD) and RTD density function of tracer particles, and dispersive mixing is evaluated using the mixing index in combination with the shear stress. The results show that the changes of centre distance between female and male rotor have little influence on dispersive mixing performance, the lead of rotor has little effect on maximum shear stress and maximum shear rate, while it has an obvious effect on mixing index, cumulative RTD, and RTD density function. The rotor speed has obvious influence on mixing performance, and average residence time of material decreases greatly and the mixing ability is weakened, while the self-cleaning performance of rotor improved obviously with the increasing of rotor speed. POLYM. ENG. SCI., 54:2407–2419, 2014. V C 2013 Society of Plastics Engineers
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影响因子：
2.4
作者：
Jongen, TRG;Bruschke, MV;Dekker, JG
通讯作者：
Dekker, JG
影响因子：
1.9
作者：
J. Keraita
通讯作者：
J. Keraita
DOI：
--
发表时间：
1989-06
期刊：
--
影响因子：
--
作者：
J. Ottino
通讯作者：
J. Ottino
DOI：
10.1002/nme.1620330610
发表时间：
1992-04
影响因子：
2.9
作者：
F. Bertrand;M. Gadbois;P. Tanguy
通讯作者：
F. Bertrand;M. Gadbois;P. Tanguy
DOI：
--
发表时间：
2004
期刊：
--
影响因子：
--
作者：
Y. S. Kim;G. Guo;K. ‐. Wang;Chul B. Park;F. Maine
通讯作者：
Y. S. Kim;G. Guo;K. ‐. Wang;Chul B. Park;F. Maine