Evaluation of hybrid lattice Boltzmann models for laminar and turbulent natural convection; International Communications in Heat and Mass Transfer; Vol. 162
| Parent link: | International Communications in Heat and Mass Transfer.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 162.— 2025.— Article number 108635, 16 p. |
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| Autor principal: | |
| Sumari: | Title screen The paper analyzes different hybrid lattice Boltzmann models in buoyancy driven flow problems. The single relaxation time (BGK), two relaxation time (TRT) and high order regularized (RLB) collision models coupled with the first (1), second (2) and fourth (4) order approximation of energy equation were studied when modelling natural convection in a closed rectangular cavity. Laminar, laminar-to-turbulent and developed turbulent flows with the Rayleigh number (Ra) up to 1012 were considered. The local, mean and turbulent characteristics were validated against benchmark direct numerical simulation data of other researchers. It was found that all hybrid modes under consideration predicted the same results with Ra≤108. The TRT-2 scheme had a satisfactory performance within the laminar-to-turbulent flow behavior in a range of 6.4⋅108≤Ra≤1010. On the other hand, the RLB-4 model demonstrated an outstanding numerical stability within developed thermal turbulence region. In particular, this scheme was stable even with Ra=1012 Текстовый файл AM_Agreement |
| Idioma: | anglès |
| Publicat: |
2025
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| Matèries: | |
| Accés en línia: | https://doi.org/10.1016/j.icheatmasstransfer.2025.108635 |
| Format: | Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=678330 |
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| 200 | 1 | |a Evaluation of hybrid lattice Boltzmann models for laminar and turbulent natural convection |f Alexander Nee | |
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| 330 | |a The paper analyzes different hybrid lattice Boltzmann models in buoyancy driven flow problems. The single relaxation time (BGK), two relaxation time (TRT) and high order regularized (RLB) collision models coupled with the first (1), second (2) and fourth (4) order approximation of energy equation were studied when modelling natural convection in a closed rectangular cavity. Laminar, laminar-to-turbulent and developed turbulent flows with the Rayleigh number (Ra) up to 1012 were considered. The local, mean and turbulent characteristics were validated against benchmark direct numerical simulation data of other researchers. It was found that all hybrid modes under consideration predicted the same results with Ra≤108. The TRT-2 scheme had a satisfactory performance within the laminar-to-turbulent flow behavior in a range of 6.4⋅108≤Ra≤1010. On the other hand, the RLB-4 model demonstrated an outstanding numerical stability within developed thermal turbulence region. In particular, this scheme was stable even with Ra=1012 | ||
| 336 | |a Текстовый файл | ||
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| 461 | 1 | |t International Communications in Heat and Mass Transfer |c Amsterdam |n Elsevier Science Publishing Company Inc. | |
| 463 | 1 | |t Vol. 162 |v Article number 108635, 16 p. |d 2025 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a turbulent natural convection | |
| 610 | 1 | |a laminar convection | |
| 610 | 1 | |a hybrid lattice Boltzmann models | |
| 700 | 1 | |a Nee |b A. E. |c specialist in the field of thermal engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of Sciences |f 1990- |g Aleksandr Eduardovich |9 18868 | |
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