Simulation of two-phase flow drift flux model in a vertical channel using Newton–Krylov method
In the present work, a numerical method is proposed in order to model the subcooled boiling flow in a vertical channel using the Drift Flux Model. The system of nonlinear equations is solved with the fully-implicit scheme using the Jacobian-free Newton–Krylov (JFNK) method. In order to improve the e...
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| Format: | Article |
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Nuclear Science and Technology Research Institute
2021-04-01
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| Series: | مجله علوم و فنون هستهای |
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| Online Access: | https://jonsat.nstri.ir/article_1179_f44d06688af9f95c043d3b1aca7a8f42.pdf |
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| author | H. Esmaili H. Kazeminejad H. Khalafi S.M. Mirvakili |
| author_facet | H. Esmaili H. Kazeminejad H. Khalafi S.M. Mirvakili |
| author_sort | H. Esmaili |
| collection | DOAJ |
| description | In the present work, a numerical method is proposed in order to model the subcooled boiling flow in a vertical channel using the Drift Flux Model. The system of nonlinear equations is solved with the fully-implicit scheme using the Jacobian-free Newton–Krylov (JFNK) method. In order to improve the efficiency of the JFNK method and its numerical stability, a semi-implicit physics based preconditioning (PBP) is implemented. Recently, the JFNK method has been widely used to solve large and sparse system of equations. To validate the proposed method, the results were compared with the experimental data, the results of modeling by using the RELAP5 code, and the available numerical results in the literature. It was found that the results corresponding to the present work have a good agreement with those of the other mentioned methods. Also, it was found that the convergence rate of the JFNK method with the PBP is at least 50% higher than the JFNK method, and the void fraction mean absolute percentage error (MAPE) is less than 7.34% over a wide range of flow and pressure |
| first_indexed | 2024-04-09T14:53:22Z |
| format | Article |
| id | doaj.art-8f3a180ceafe468b9b515491c7bcbc70 |
| institution | Directory Open Access Journal |
| issn | 1735-1871 2676-5861 |
| language | fas |
| last_indexed | 2024-04-09T14:53:22Z |
| publishDate | 2021-04-01 |
| publisher | Nuclear Science and Technology Research Institute |
| record_format | Article |
| series | مجله علوم و فنون هستهای |
| spelling | doaj.art-8f3a180ceafe468b9b515491c7bcbc702023-05-02T09:06:29ZfasNuclear Science and Technology Research Instituteمجله علوم و فنون هستهای1735-18712676-58612021-04-0142111010.24200/nst.2021.11791179Simulation of two-phase flow drift flux model in a vertical channel using Newton–Krylov methodH. Esmaili0H. Kazeminejad1H. Khalafi2S.M. Mirvakili3Nuclear Science and Technology Research Institute (NSTRI), AEOI, P.O. Box 11365-3486, Tehran, IranRadiation Application Research School, Nuclear Science and Technology Research Institute , ,AEOI, P.O.Box:11365-3486, Tehran IranNuclear Science and Technology Research Institute (NSTRI), AEOI, P.O. Box 11365-3486, Tehran, IranNuclear Science and Technology Research Institute (NSTRI), AEOI, P.O. Box 11365-3486, Tehran, IranIn the present work, a numerical method is proposed in order to model the subcooled boiling flow in a vertical channel using the Drift Flux Model. The system of nonlinear equations is solved with the fully-implicit scheme using the Jacobian-free Newton–Krylov (JFNK) method. In order to improve the efficiency of the JFNK method and its numerical stability, a semi-implicit physics based preconditioning (PBP) is implemented. Recently, the JFNK method has been widely used to solve large and sparse system of equations. To validate the proposed method, the results were compared with the experimental data, the results of modeling by using the RELAP5 code, and the available numerical results in the literature. It was found that the results corresponding to the present work have a good agreement with those of the other mentioned methods. Also, it was found that the convergence rate of the JFNK method with the PBP is at least 50% higher than the JFNK method, and the void fraction mean absolute percentage error (MAPE) is less than 7.34% over a wide range of flow and pressurehttps://jonsat.nstri.ir/article_1179_f44d06688af9f95c043d3b1aca7a8f42.pdftwo-phase flowdrift flux modeljfnk method |
| spellingShingle | H. Esmaili H. Kazeminejad H. Khalafi S.M. Mirvakili Simulation of two-phase flow drift flux model in a vertical channel using Newton–Krylov method مجله علوم و فنون هستهای two-phase flow drift flux model jfnk method |
| title | Simulation of two-phase flow drift flux model in a vertical channel using Newton–Krylov method |
| title_full | Simulation of two-phase flow drift flux model in a vertical channel using Newton–Krylov method |
| title_fullStr | Simulation of two-phase flow drift flux model in a vertical channel using Newton–Krylov method |
| title_full_unstemmed | Simulation of two-phase flow drift flux model in a vertical channel using Newton–Krylov method |
| title_short | Simulation of two-phase flow drift flux model in a vertical channel using Newton–Krylov method |
| title_sort | simulation of two phase flow drift flux model in a vertical channel using newton krylov method |
| topic | two-phase flow drift flux model jfnk method |
| url | https://jonsat.nstri.ir/article_1179_f44d06688af9f95c043d3b1aca7a8f42.pdf |
| work_keys_str_mv | AT hesmaili simulationoftwophaseflowdriftfluxmodelinaverticalchannelusingnewtonkrylovmethod AT hkazeminejad simulationoftwophaseflowdriftfluxmodelinaverticalchannelusingnewtonkrylovmethod AT hkhalafi simulationoftwophaseflowdriftfluxmodelinaverticalchannelusingnewtonkrylovmethod AT smmirvakili simulationoftwophaseflowdriftfluxmodelinaverticalchannelusingnewtonkrylovmethod |