发帖
雷达卡
摘要翻译：
用介观尺度模拟方法研究了柔性聚合物在方形微通道中的非平衡结构和动力学性质。链长和流动强度是系统变化的。识别出两种输运机制，分别对应于弱约束和强约束。对于强约束，输运性质与聚合物长度无关。对短聚合物的长时间翻滚动力学的分析得到了非周期运动，其与流动强度呈次线性依赖关系。我们发现在构象和动力学性质上与简单剪切流的结果有明显的不同。
---
英文标题：
《Mesoscale simulations of polymer dynamics in microchannel flows》
---
作者：
L. Cannavacciuolo, R. G. Winkler, G. Gompper
---
最新提交年份：
2007
---
分类信息：
一级分类：Physics 物理学
二级分类：Soft Condensed Matter 软凝聚态物质
分类描述：Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜，聚合物，液晶，玻璃，胶体，颗粒物质
--
一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
--
---
英文摘要：
The non-equilibrium structural and dynamical properties of flexible polymers confined in a square microchannel and exposed to a Poiseuille flow are investigated by mesoscale simulations. The chain length and the flow strength are systematically varied. Two transport regimes are identified, corresponding to weak and strong confinement. For strong confinement, the transport properties are independent of polymer length. The analysis of the long-time tumbling dynamics of short polymers yields non-periodic motion with a sublinear dependence on the flow strength. We find distinct differences for conformational as well as dynamical properties from results obtained for simple shear flow.
---
PDF链接：
https://arxiv.org/pdf/709.3822
京公网安备 11010802022788号
