A thermal immiscible multiphase flow simulation by lattice Boltzmann method
The lattice Boltzmann (LB) method, as a mesoscopic approach based on the kinetic theory, has been significantly developed and applied in a variety of fields in the recent decades. Among all the LB community members, the pseudopotential LB plays an increasingly important role in multiphase flow and p...
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| Format: | Article |
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/46248/ |
| _version_ | 1848797287028883456 |
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| author | Gong, Wei Chen, Sheng Yan, Yuying |
| author_facet | Gong, Wei Chen, Sheng Yan, Yuying |
| author_sort | Gong, Wei |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The lattice Boltzmann (LB) method, as a mesoscopic approach based on the kinetic theory, has been significantly developed and applied in a variety of fields in the recent decades. Among all the LB community members, the pseudopotential LB plays an increasingly important role in multiphase flow and phase change problems simulation. The thermal immiscible multiphase flow simulation using pseudopotential LB method is studied in this work. The results show that it is difficult to achieve multi-bubble/droplet coexistence due to the unphysical mass transfer phenomenon of “the big eat the small” – the small bubbles/droplets disappear and the big ones getting bigger before a physical coalescence when using an internal energy based temperature equation for single-component multiphase (SCMP) pseudopotential models. In addition, this unphysical effect can be effectively impeded by coupling an entropy-based temperature field, and the influence on density fields with different energy equations are discussed. The findings are identified and reported in this paper for the first time. This work gives a significant inspiration for solving the unphysical mass transfer problem, which determines whether the SCMP LB model can be used for multi-bubble/droplet systems. |
| first_indexed | 2025-11-14T20:01:28Z |
| format | Article |
| id | nottingham-46248 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:01:28Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-462482020-05-04T19:07:19Z https://eprints.nottingham.ac.uk/46248/ A thermal immiscible multiphase flow simulation by lattice Boltzmann method Gong, Wei Chen, Sheng Yan, Yuying The lattice Boltzmann (LB) method, as a mesoscopic approach based on the kinetic theory, has been significantly developed and applied in a variety of fields in the recent decades. Among all the LB community members, the pseudopotential LB plays an increasingly important role in multiphase flow and phase change problems simulation. The thermal immiscible multiphase flow simulation using pseudopotential LB method is studied in this work. The results show that it is difficult to achieve multi-bubble/droplet coexistence due to the unphysical mass transfer phenomenon of “the big eat the small” – the small bubbles/droplets disappear and the big ones getting bigger before a physical coalescence when using an internal energy based temperature equation for single-component multiphase (SCMP) pseudopotential models. In addition, this unphysical effect can be effectively impeded by coupling an entropy-based temperature field, and the influence on density fields with different energy equations are discussed. The findings are identified and reported in this paper for the first time. This work gives a significant inspiration for solving the unphysical mass transfer problem, which determines whether the SCMP LB model can be used for multi-bubble/droplet systems. Elsevier 2017-09-19 Article PeerReviewed Gong, Wei, Chen, Sheng and Yan, Yuying (2017) A thermal immiscible multiphase flow simulation by lattice Boltzmann method. International Communications in Heat and Mass Transfer, 88 . pp. 136-138. ISSN 0735-1933 multi-bubble/droplet coexistence unphysical mass transfer thermal immiscible multiphase flow pseudopotential lattice Boltzmann method http://www.sciencedirect.com/science/article/pii/S0735193317302294 doi:10.1016/j.icheatmasstransfer.2017.08.019 doi:10.1016/j.icheatmasstransfer.2017.08.019 |
| spellingShingle | multi-bubble/droplet coexistence unphysical mass transfer thermal immiscible multiphase flow pseudopotential lattice Boltzmann method Gong, Wei Chen, Sheng Yan, Yuying A thermal immiscible multiphase flow simulation by lattice Boltzmann method |
| title | A thermal immiscible multiphase flow simulation by lattice Boltzmann method |
| title_full | A thermal immiscible multiphase flow simulation by lattice Boltzmann method |
| title_fullStr | A thermal immiscible multiphase flow simulation by lattice Boltzmann method |
| title_full_unstemmed | A thermal immiscible multiphase flow simulation by lattice Boltzmann method |
| title_short | A thermal immiscible multiphase flow simulation by lattice Boltzmann method |
| title_sort | thermal immiscible multiphase flow simulation by lattice boltzmann method |
| topic | multi-bubble/droplet coexistence unphysical mass transfer thermal immiscible multiphase flow pseudopotential lattice Boltzmann method |
| url | https://eprints.nottingham.ac.uk/46248/ https://eprints.nottingham.ac.uk/46248/ https://eprints.nottingham.ac.uk/46248/ |