Euler–Euler Multi-Scale Simulations of Internal Boiling Flow with Conjugated Heat Transfer
A numerical approach was implemented, to study a boiling flow in a horizontal serpentine tube. A NEPTUNE_CFD two-fluid model was used, to study the behavior of the refrigerant R141b in diabatic cases. The model was based on the Euler–Euler formalism of the Navier–Stokes equations, in which governing...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Applied Mechanics |
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| Online Access: | https://www.mdpi.com/2673-3161/4/1/11 |
| _version_ | 1797613789618634752 |
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| author | Edouard Butaye Adrien Toutant Samuel Mer |
| author_facet | Edouard Butaye Adrien Toutant Samuel Mer |
| author_sort | Edouard Butaye |
| collection | DOAJ |
| description | A numerical approach was implemented, to study a boiling flow in a horizontal serpentine tube. A NEPTUNE_CFD two-fluid model was used, to study the behavior of the refrigerant R141b in diabatic cases. The model was based on the Euler–Euler formalism of the Navier–Stokes equations, in which governing equations are solved for both phases of the fluid at each time step. The conjugate heat transfer—between the tube wall and the fluid—was considered via a coupling with the SYRTHES 4.3 software, which solves solid conduction in three dimensions. A mesh convergence study was carried out, which found that a resolution of 40 meshes per diameter was necessary for our case. The approach was validated by comparison with an experimental study of the literature, based on the faithful reproduction of the positions of two-phase flow regime transitions in the domain. Original post-processing was used, to unravel the flow characteristics. The mean and RMS fields of void fraction, temperatures and stream wise velocities in several sections were analyzed, when statistical convergence was reached. A thermal equilibrium was reached in the saturated liquid, but not in the vapor phase, due to the flow dynamic and possibly the presence of droplets. Finally, a thermal analysis of the configuration was proposed. It demonstrated the strong coupling between the temperature distribution in the solid, and the two-phase flow regimes at stake in the fluid domain. |
| first_indexed | 2024-03-11T06:59:37Z |
| format | Article |
| id | doaj.art-7d14bb5d8c5c4930a7c315f9635978e4 |
| institution | Directory Open Access Journal |
| issn | 2673-3161 |
| language | English |
| last_indexed | 2024-03-11T06:59:37Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Mechanics |
| spelling | doaj.art-7d14bb5d8c5c4930a7c315f9635978e42023-11-17T09:20:18ZengMDPI AGApplied Mechanics2673-31612023-02-014119120910.3390/applmech4010011Euler–Euler Multi-Scale Simulations of Internal Boiling Flow with Conjugated Heat TransferEdouard Butaye0Adrien Toutant1Samuel Mer2PROMES Laboratory, CNRS—University of Perpignan (UPVD), 66100 Perpignan, FrancePROMES Laboratory, CNRS—University of Perpignan (UPVD), 66100 Perpignan, FrancePROMES Laboratory, CNRS—University of Perpignan (UPVD), 66100 Perpignan, FranceA numerical approach was implemented, to study a boiling flow in a horizontal serpentine tube. A NEPTUNE_CFD two-fluid model was used, to study the behavior of the refrigerant R141b in diabatic cases. The model was based on the Euler–Euler formalism of the Navier–Stokes equations, in which governing equations are solved for both phases of the fluid at each time step. The conjugate heat transfer—between the tube wall and the fluid—was considered via a coupling with the SYRTHES 4.3 software, which solves solid conduction in three dimensions. A mesh convergence study was carried out, which found that a resolution of 40 meshes per diameter was necessary for our case. The approach was validated by comparison with an experimental study of the literature, based on the faithful reproduction of the positions of two-phase flow regime transitions in the domain. Original post-processing was used, to unravel the flow characteristics. The mean and RMS fields of void fraction, temperatures and stream wise velocities in several sections were analyzed, when statistical convergence was reached. A thermal equilibrium was reached in the saturated liquid, but not in the vapor phase, due to the flow dynamic and possibly the presence of droplets. Finally, a thermal analysis of the configuration was proposed. It demonstrated the strong coupling between the temperature distribution in the solid, and the two-phase flow regimes at stake in the fluid domain.https://www.mdpi.com/2673-3161/4/1/11Euler–Euler formulationtwo-phase flowphase changehorizontal boiling flownumerical simulation |
| spellingShingle | Edouard Butaye Adrien Toutant Samuel Mer Euler–Euler Multi-Scale Simulations of Internal Boiling Flow with Conjugated Heat Transfer Applied Mechanics Euler–Euler formulation two-phase flow phase change horizontal boiling flow numerical simulation |
| title | Euler–Euler Multi-Scale Simulations of Internal Boiling Flow with Conjugated Heat Transfer |
| title_full | Euler–Euler Multi-Scale Simulations of Internal Boiling Flow with Conjugated Heat Transfer |
| title_fullStr | Euler–Euler Multi-Scale Simulations of Internal Boiling Flow with Conjugated Heat Transfer |
| title_full_unstemmed | Euler–Euler Multi-Scale Simulations of Internal Boiling Flow with Conjugated Heat Transfer |
| title_short | Euler–Euler Multi-Scale Simulations of Internal Boiling Flow with Conjugated Heat Transfer |
| title_sort | euler euler multi scale simulations of internal boiling flow with conjugated heat transfer |
| topic | Euler–Euler formulation two-phase flow phase change horizontal boiling flow numerical simulation |
| url | https://www.mdpi.com/2673-3161/4/1/11 |
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