IMECH-IR  > 流固耦合系统力学重点实验室
Alternative TitleDissipative particle dynamics simulations of macromolecules in micro-channels
周吕文; 刘谋斌; 常建忠; Zhou, LW; Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Source Publication高分子学报=Acta Polymerica Sinica
Other AbstractThe transport and conformation of macromolecules in micro-channels were studied by using the dissipative particle dynamics (DPD) and finite extensible non-linear elastic (FENE) bead spring chains model. The dynamic behavior of macromolecules with different numbers of beads and different chain lengths in three kinds of micro-channels, straight, quadrate contraction and sloping contraction micro-channels are comparatively analyzed. It is found that macromolecules are mainly concentrated in the middle of channels. Macromolecules located near solid walls are stretched better than those in the middle of channels, which are usually coiled. The shape of micro-channel can influence the conformation and transportation of macromolecules. Straight channels can well stretch the macromolecules. Quadrate contraction channels can have negative effects in stretching the macromolecules with possible circulation flow at the corner areas. While the behavior of sloping contraction channels is between that of the straight channels and quadrate contraction channels. It is also found that macromolecule chains do not influence the temperature distribution and evolution. Instead macromolecular chains have remarkable influences on the density and velocity distribution, while the distribution and conformation of the macromolecules are closely related to the shape and geometry of the micro channels. The macromolecules tend to drag the simple DPD particles, reducing their velocity, and leading to density fluctuations. The dragging effect is more important as the number of macromolecules or the length of the rnacromolecular chain increases.
Subject Area非牛顿流
Indexed BySCI ; CSCD
WOS IDWOS:000306532800005
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
Funding Organization国家自然科学基金(基金号50976108)资助项目
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:9[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding AuthorZhou, LW; Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
周吕文,刘谋斌,常建忠,等. 微通道中高分子运动的耗散粒子动力学模拟[J]. 高分子学报=Acta Polymerica Sinica,2012(7):720-727.
APA 周吕文,刘谋斌,常建忠,Zhou, LW,&Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China..(2012).微通道中高分子运动的耗散粒子动力学模拟.高分子学报=Acta Polymerica Sinica(7),720-727.
MLA 周吕文,et al."微通道中高分子运动的耗散粒子动力学模拟".高分子学报=Acta Polymerica Sinica .7(2012):720-727.
Files in This Item: Download All
File Name/Size DocType Version Access License
SCI-J2012-228.pdf(955KB) 开放获取--View Download
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[周吕文]'s Articles
[刘谋斌]'s Articles
[常建忠]'s Articles
Baidu academic
Similar articles in Baidu academic
[周吕文]'s Articles
[刘谋斌]'s Articles
[常建忠]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[周吕文]'s Articles
[刘谋斌]'s Articles
[常建忠]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: SCI-J2012-228.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.