Abstract
A coupled LBGK scheme, constituting of two independent distribution functions describing velocity and temperature respectively, is established in this paper. Chapman-Enskog expansion, a procedure to prove the consistency of this mesoscopic method with macroscopic conservation laws, is also conducted for both lattice scheme of velocity and temperature, as well as a simple introduction on the common used DnQb model. An efficient coding manner for Matlab is proposed in this paper, which improves the coding and calculation efficiency at the same time. The compact and efficient scheme is then applied in the simulation of the famous and well-studied Rayleigh-Benard convection, which is common seen as a representative heat convection problem in modern industries. The results are interesting and reasonable, and meet the experimental data well. The stability of this scheme is also proved through different cases with a large range of Rayleigh number, until 2 million.
Original language | English (US) |
---|---|
Title of host publication | Computational Science – ICCS 2018 - 18th International Conference, Proceedings |
Editors | Jack Dongarra, Haohuan Fu, Valeria V. Krzhizhanovskaya, Michael Harold Lees, Peter M. Sloot, Yong Shi, Yingjie Tian |
Publisher | Springer Verlag |
Pages | 149-162 |
Number of pages | 14 |
ISBN (Print) | 9783319937120 |
DOIs | |
State | Published - 2018 |
Event | 18th International Conference on Computational Science, ICCS 2018 - Wuxi, China Duration: Jun 11 2018 → Jun 13 2018 |
Publication series
Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
---|---|
Volume | 10862 LNCS |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference
Conference | 18th International Conference on Computational Science, ICCS 2018 |
---|---|
Country/Territory | China |
City | Wuxi |
Period | 06/11/18 → 06/13/18 |
Bibliographical note
Publisher Copyright:© 2018, Springer International Publishing AG, part of Springer Nature.
Keywords
- Heat and flow coupling
- LBM
- Rayleigh-Benard convection
ASJC Scopus subject areas
- Theoretical Computer Science
- General Computer Science