IMECH-IR  > 高温气体动力学国家重点实验室
Analysis of transport properties determined by Langevin dynamics using Green-Kubo formulae
Zhang J(张俊); Zeng DD; Fan J(樊菁); Zhang, J (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Source PublicationPHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
2014-10-01
Volume411Pages:104-112
ISSN0378-4371
AbstractRecently, the Langevin dynamics method has been applied to simulate gas flows. It is very crucial to evaluate whether the Langevin dynamics could correctly predict transport properties of gas or not. In this paper, the transport properties of Langevin velocity model and acceleration model are analyzed by using Green-Kubo formulae. For the Langevin velocity model, the time correlation functions have the exact exponent forms, and the Prandtl number for monatomic gas is predicted to be 3/2. For the Langevin acceleration model with an additional time scale, the molecular movements change from Markovian process to Non-Markovian process, and the Prandtl number could be adjusted to some extent. In the limit of equilibrium, there is a minimum about 1.298 for the Prandtl number of monatomic gas when the two time scales are equal in Langevin acceleration model. Besides theoretical analyses, molecular simulations according to the Langevin velocity model and acceleration model are performed, and the simulation results validate our analytical solutions. (C) 2014 Elsevier B.V. All rights reserved.
KeywordDsmc Langevin Dynamics Green-kubo Formulae Transport Coefficients
Subject AreaPhysics
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000340330300012
Funding OrganizationThis work was supported by the National Natural Science Foundation of China (Grant Nos. 11002147 and 11372325).
DepartmentLHD微尺度和非平衡流动
Classification二类/Q2
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49098
Collection高温气体动力学国家重点实验室
Corresponding AuthorZhang, J (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Zhang J,Zeng DD,Fan J,et al. Analysis of transport properties determined by Langevin dynamics using Green-Kubo formulae[J]. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,2014,411:104-112.
APA Zhang J,Zeng DD,Fan J,&Zhang, J .(2014).Analysis of transport properties determined by Langevin dynamics using Green-Kubo formulae.PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,411,104-112.
MLA Zhang J,et al."Analysis of transport properties determined by Langevin dynamics using Green-Kubo formulae".PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS 411(2014):104-112.
Files in This Item: Download All
File Name/Size DocType Version Access License
IMCAS-J2014-189.pdf(599KB) 开放获取--View Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang J(张俊)]'s Articles
[Zeng DD]'s Articles
[Fan J(樊菁)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang J(张俊)]'s Articles
[Zeng DD]'s Articles
[Fan J(樊菁)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang J(张俊)]'s Articles
[Zeng DD]'s Articles
[Fan J(樊菁)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: IMCAS-J2014-189.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.