Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transfer
In this study, the neutral scalar thermal model is presented for single-phase and so, a single-phase Rayleigh–Bénard is investigated. The Shan-Chen model is expressed in the isothermal state, and by combining the two models, the mixed Shan-Chen thermal method is presented. Then, using a mixed model,...
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2025-01-01
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| Series: | Results in Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715624006714 |
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| author | Murtadha M. Al-Zahiwat Ihab Omar Shahram Babadoust Laith S. Sabri Arian Yazdkhsti S. Mohammad Sajadi Abbas Deriszadeh Nafiseh Emami |
| author_facet | Murtadha M. Al-Zahiwat Ihab Omar Shahram Babadoust Laith S. Sabri Arian Yazdkhsti S. Mohammad Sajadi Abbas Deriszadeh Nafiseh Emami |
| author_sort | Murtadha M. Al-Zahiwat |
| collection | DOAJ |
| description | In this study, the neutral scalar thermal model is presented for single-phase and so, a single-phase Rayleigh–Bénard is investigated. The Shan-Chen model is expressed in the isothermal state, and by combining the two models, the mixed Shan-Chen thermal method is presented. Then, using a mixed model, a two-phase Rayleigh–Bénard with the thermal Shan-Chen method is proposed. Two-phase Rayleigh–Bénard convective heat transfer is simulated at the relatively high Rayleigh numbers (105), different Capillary numbers (10−3 to 10−4), and also, various ε parameters (parameters related to the temperature difference and thermal expansion). In two-phase Rayleigh–Bénard convective heat transfer increasing the Rayleigh number leads to the increment of Rayleigh–Bénard convective heat transfer between the hot and cold wall and the temperature gradient enhances in the vicinity of the upper wall, lower wall, and interface. It is worth mentioning, that in the two-phase Rayleigh–Bénard problem, the variations of the interface are changed only by changing the thermal expansion coefficient and the temperature difference between the two walls. The results show that the mixed model can simulate two-phase thermal flows. The stability of this method is the same as the multi-phase isothermal models, and it can be applied well for different state equations and relatively high Rayleigh numbers. |
| format | Article |
| id | doaj-art-bac385d485384d4781e3a57a1cd93728 |
| institution | Kabale University |
| issn | 2211-7156 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj-art-bac385d485384d4781e3a57a1cd937282025-01-29T05:00:46ZengElsevierResults in Chemistry2211-71562025-01-0113101975Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transferMurtadha M. Al-Zahiwat0Ihab Omar1Shahram Babadoust2Laith S. Sabri3Arian Yazdkhsti4S. Mohammad Sajadi5Abbas Deriszadeh6Nafiseh Emami7Department of Chemical engineering, College of Engineering, University of Misan, Amarah, IraqAir Conditioning Engineering Department, Faculty of Engineering, Warith Al-Anbiyaa University, Karbala 56001, IraqDepartment of Medical Biochemical Analysis, Cihan University-Erbil, Erbil, Kurdistan Region, IraqDepartment of Chemical Engineering, University of Technology- Iraq, Baghdad, IraqDepartment of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, IranDepartment of Chemistry, Payam e Noor University, Saqqez Branch, Saqqez, Kurdistan, IranDepartment of Chemical Engineering, University of Sistan and Baluchestan, Zahedan, IranDepartment of Chemical Engineering, Faculty of Engineering, Isfahan university, Iran; Corresponding author.In this study, the neutral scalar thermal model is presented for single-phase and so, a single-phase Rayleigh–Bénard is investigated. The Shan-Chen model is expressed in the isothermal state, and by combining the two models, the mixed Shan-Chen thermal method is presented. Then, using a mixed model, a two-phase Rayleigh–Bénard with the thermal Shan-Chen method is proposed. Two-phase Rayleigh–Bénard convective heat transfer is simulated at the relatively high Rayleigh numbers (105), different Capillary numbers (10−3 to 10−4), and also, various ε parameters (parameters related to the temperature difference and thermal expansion). In two-phase Rayleigh–Bénard convective heat transfer increasing the Rayleigh number leads to the increment of Rayleigh–Bénard convective heat transfer between the hot and cold wall and the temperature gradient enhances in the vicinity of the upper wall, lower wall, and interface. It is worth mentioning, that in the two-phase Rayleigh–Bénard problem, the variations of the interface are changed only by changing the thermal expansion coefficient and the temperature difference between the two walls. The results show that the mixed model can simulate two-phase thermal flows. The stability of this method is the same as the multi-phase isothermal models, and it can be applied well for different state equations and relatively high Rayleigh numbers.http://www.sciencedirect.com/science/article/pii/S2211715624006714Multi-phase thermal flowLattice Boltzmann methodRayleigh–Bénard |
| spellingShingle | Murtadha M. Al-Zahiwat Ihab Omar Shahram Babadoust Laith S. Sabri Arian Yazdkhsti S. Mohammad Sajadi Abbas Deriszadeh Nafiseh Emami Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transfer Results in Chemistry Multi-phase thermal flow Lattice Boltzmann method Rayleigh–Bénard |
| title | Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transfer |
| title_full | Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transfer |
| title_fullStr | Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transfer |
| title_full_unstemmed | Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transfer |
| title_short | Using of multi-phase thermal model of the lattice Boltzmann method for simulation of two-phase Rayleigh–Bénard convective heat transfer |
| title_sort | using of multi phase thermal model of the lattice boltzmann method for simulation of two phase rayleigh benard convective heat transfer |
| topic | Multi-phase thermal flow Lattice Boltzmann method Rayleigh–Bénard |
| url | http://www.sciencedirect.com/science/article/pii/S2211715624006714 |
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