IMECH-IR  > 国家微重力实验室
Coupling effect of Brownian motion and laminar shear flow on colloid coagulation: A Brownian dynamics simulation study
Xu SH(徐升华); Sun ZW(孙祉伟); Li X(李旭); Wang JT; Sun, ZW; Chinese Acad Sci, Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China.
Source PublicationCHINESE PHYSICS B
2012-05-01
Volume21Issue:5Pages:054702
ISSN1674-1056
AbstractSimultaneous orthokinetic and perikinetic coagulations (SOPCs) are studied for small and large Peclet numbers (P-e) using Brownian dynamics simulation. The results demonstrate that the contributions of the Brownian motion and the shear flow to the overall coagulation rate are basically not additive. At the early stages of coagulation with small Peclet numbers, the ratio of overall coagulation rate to the rate of pure perikinetic coagulation is proportional to P-e(1/2), while with high Peclet numbers, the ratio of overall coagulation rate to the rate of pure orthokinetic coagulation is proportional to P-e(-1/2). Moreover, our results show that the aggregation rate generally changes with time for the SOPC, which is different from that for pure perikinetic and pure orthokinetic coagulations. By comparing the SOPC with pure perikinetic and pure orthokinetic coagulations, we show that the redistribution of particles due to Brownian motion can play a very important role in the SOPC. In addition, the effects of redistribution in the directions perpendicular and parallel to the shear flow direction are different. This perspective explains the behavior of coagulation due to the joint effects of the Brownian motion (perikinetic) and the fluid motion (orthokinetic).
KeywordSimultaneous Orthokinetic And Perikinetic Coagulation Brownian Motion Shear Flow Colloidal Aggregation Turbidity Measurement Aggregation Dispersions Particles Diffusion
Subject Area物理力学
URL查看原文
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000303999000055
Funding OrganizationProject supported by the National Natural Science Foundation of China (Grant Nos. 10972217, 10932012 and 11032011) and the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KJCX2-YW-L08).
DepartmentNML复杂流体
Classification二类/Q2
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46579
Collection国家微重力实验室
Corresponding AuthorSun, ZW; Chinese Acad Sci, Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Xu SH,Sun ZW,Li X,et al. Coupling effect of Brownian motion and laminar shear flow on colloid coagulation: A Brownian dynamics simulation study[J]. CHINESE PHYSICS B,2012,21(5):054702.
APA 徐升华,孙祉伟,李旭,Wang JT,Sun, ZW,&Chinese Acad Sci, Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China..(2012).Coupling effect of Brownian motion and laminar shear flow on colloid coagulation: A Brownian dynamics simulation study.CHINESE PHYSICS B,21(5),054702.
MLA 徐升华,et al."Coupling effect of Brownian motion and laminar shear flow on colloid coagulation: A Brownian dynamics simulation study".CHINESE PHYSICS B 21.5(2012):054702.
Files in This Item: Download All
File Name/Size DocType Version Access License
SCI-J2012-040.pdf(456KB) 开放获取--View Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[徐升华]'s Articles
[孙祉伟]'s Articles
[李旭]'s Articles
Baidu academic
Similar articles in Baidu academic
[徐升华]'s Articles
[孙祉伟]'s Articles
[李旭]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[徐升华]'s Articles
[孙祉伟]'s Articles
[李旭]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: SCI-J2012-040.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.