IMECH-IR  > 力学所知识产出(1956-2008)
Hybrid computations using continuum and molecular dynamics for micro-fluidics
Cui J; He GW(何国威); He, GW (reprint author), CAS, Inst Mech, LNM, Beijing 100864, Peoples R China.
Source Publication2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems, Vols 1-3
2006
Conference NameIEEE International Conference of Nano/Micro Engineered and Molecular Systems
Conference DateJAN 18-21, 2006
Conference PlaceZhuhai, PEOPLES R CHINA
AbstractA hybrid numerical method of particle-continuum dynamics designed for micro-fluidics is being developed which solves the Navier-Stokes equations in one domain, where the continuum description is still valid, and uses the molecular dynamics in another domain where the continuum description fails. The matching of these two descriptions can be achieved by a constrained particle dynamics in the overlap region, which exchanges the information between the molecular dynamics and the Navier-Stokes equations. However, the existing models for the constraint particle dynamics often have the empirical parameters such as the coupling parameter, the size of overlap domain and the ratio of the time steps for the molecular dynamics and the Navier-Stokes equation. In this paper, we develop a dynamic Langevin equation, and the coupling parameters in the models can be determined by the velocity consistent constraint. The dynamic scheme is used to simulate the sudden-start Couette flows with either slip or no-slip boundary conditions. The results obtained are quantitatively in agreement with the analytical solutions under the no-slip boundary condition and the full MD simulations under the certain slip boundary conditions. This agreement demonstrates the validity of the dynamic Langevin equation.
WOS IDWOS:000248485802106
ISBN978-1-4244-0139-0
URL查看原文
Indexed ByCPCI-S
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58900
Collection力学所知识产出(1956-2008)
Corresponding AuthorHe, GW (reprint author), CAS, Inst Mech, LNM, Beijing 100864, Peoples R China.
Recommended Citation
GB/T 7714
Cui J,He GW,He, GW . Hybrid computations using continuum and molecular dynamics for micro-fluidics[C]2006 1st IEEE International Conference on Nano/Micro Engineered and Molecular Systems, Vols 1-3,2006.
Files in This Item: Download All
File Name/Size DocType Version Access License
CPCI-Add049.pdf(5294KB)会议论文 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cui J]'s Articles
[何国威]'s Articles
[He, GW (reprint author), CAS, Inst Mech, LNM, Beijing 100864, Peoples R China.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cui J]'s Articles
[何国威]'s Articles
[He, GW (reprint author), CAS, Inst Mech, LNM, Beijing 100864, Peoples R China.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cui J]'s Articles
[何国威]'s Articles
[He, GW (reprint author), CAS, Inst Mech, LNM, Beijing 100864, Peoples R China.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: CPCI-Add049.pdf
Format: Adobe PDF
 

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