UM  > Faculty of Science and Technology  > DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Three dimensional thermal diffusion in anisotropic heterogeneous structures simulated by a non-dimensional lattice Boltzmann method with a controllable structure generation scheme based on discrete Gaussian quadrature space and velocity
Su, Yan1; Ng, Tiniao1; Zhang, Yinping2; Davidson, Jane H.3
2017-05
Source PublicationINTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN0017-9310
Volume108Pages:386-401
Abstract

A new Controllable Structure Generation Scheme (CSGS) based on discrete Gaussian quadrature space and velocity is presented and used to generate multiple-phase random isotropic homogenous and shape-constrained anisotropic heterogeneous structures. The primary advantage of the new CSGS over the existing random structure generation growth method is the ability to model a wide variety of structures by controlling the shape through relatively simple constraint indexes. The growth speed probability function is introduced to control the mesoscopic porosities and mixture/separation of material phases. The model is applied to generate four packed structure types (shapeless random, separated solid shapes, separated random-filled shapes, and random-mixture-filled shapes). Three-dimensional steady and transient thermal diffusion are simulated by Non-Dimensional Lattice Boltzmann Method (NDLBM). The steady state results are compared to measured data available in the published literature. The transient results reveal how the mesoscopic shape of a structure impacts thermal diffusion. With equivalent macroscopic volume fractions, structures with higher mesoscopic volume fractions of high conductivity phases possess higher effective thermal conductivity/diffusivity because there is greater connectivity of the higher conductive material at mesoscopic scale. (C) 2016 Elsevier Ltd. All rights reserved.

KeywordComputational Method Multi-phase Porous Medium Thermal Diffusion
DOI10.1016/j.ijheatmasstransfer.2016.12.023
URLView the original
Indexed BySCIE
Language英语
WOS Research AreaThermodynamics ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Mechanics
WOS IDWOS:000399357800032
PublisherPERGAMON-ELSEVIER SCIENCE LTD
The Source to ArticleWOS
Fulltext Access
Citation statistics
Cited Times [WOS]:11   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Affiliation1.Department of Electromechanical Engineering, FST, University of Macau, Taipa, Macau
2.Department of Building Science, Tsinghua University, Beijing 100084, China
3.Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Su, Yan,Ng, Tiniao,Zhang, Yinping,et al. Three dimensional thermal diffusion in anisotropic heterogeneous structures simulated by a non-dimensional lattice Boltzmann method with a controllable structure generation scheme based on discrete Gaussian quadrature space and velocity[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2017,108:386-401.
APA Su, Yan,Ng, Tiniao,Zhang, Yinping,&Davidson, Jane H..(2017).Three dimensional thermal diffusion in anisotropic heterogeneous structures simulated by a non-dimensional lattice Boltzmann method with a controllable structure generation scheme based on discrete Gaussian quadrature space and velocity.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,108,386-401.
MLA Su, Yan,et al."Three dimensional thermal diffusion in anisotropic heterogeneous structures simulated by a non-dimensional lattice Boltzmann method with a controllable structure generation scheme based on discrete Gaussian quadrature space and velocity".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 108(2017):386-401.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Su, Yan]'s Articles
[Ng, Tiniao]'s Articles
[Zhang, Yinping]'s Articles
Baidu academic
Similar articles in Baidu academic
[Su, Yan]'s Articles
[Ng, Tiniao]'s Articles
[Zhang, Yinping]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Su, Yan]'s Articles
[Ng, Tiniao]'s Articles
[Zhang, Yinping]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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