CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure
This paper presents the effects of minichannel geometrical configuration on flow structures, hydrodynamics, and heat transfer behavior of the subcooled flow boiling process in a cooling system with high heat flux. The two-dimensional numerical simulations are quantitatively conducted for dielectric...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | e-Prime: Advances in Electrical Engineering, Electronics and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772671123001262 |
| _version_ | 1827808082614288384 |
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| author | Amal Igaadi Rachid El Amraoui Hicham El Mghari |
| author_facet | Amal Igaadi Rachid El Amraoui Hicham El Mghari |
| author_sort | Amal Igaadi |
| collection | DOAJ |
| description | This paper presents the effects of minichannel geometrical configuration on flow structures, hydrodynamics, and heat transfer behavior of the subcooled flow boiling process in a cooling system with high heat flux. The two-dimensional numerical simulations are quantitatively conducted for dielectric fluid FC-72 as a working fluid in two different configurations (straight and periodic constriction-expansion) of a minichannel mounted vertically at three inlet temperatures (285.35, 304.54, and 325.35 K) at constant mass flux (836.64 kg/m2s) and input heat flux (191,553 W/m2). The predicted results are in excellent agreement with the published experimental data, which proves the efficiency of the present numerical model. In both configurations, the heat transfer coefficient increases with an increase in the inlet temperature. The results show that the periodic constriction-expansion design significantly improves the heat transfer performances of subcooled flow boiling by 21.77–36.9% for Tin = 285.35–325.35 K because the periodic constriction-expansion configuration offers good mixing between layers. |
| first_indexed | 2024-03-11T22:06:28Z |
| format | Article |
| id | doaj.art-f7f8a5dff177434db481bbe8f1c1affb |
| institution | Directory Open Access Journal |
| issn | 2772-6711 |
| language | English |
| last_indexed | 2024-03-11T22:06:28Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | e-Prime: Advances in Electrical Engineering, Electronics and Energy |
| spelling | doaj.art-f7f8a5dff177434db481bbe8f1c1affb2023-09-25T04:12:50ZengElseviere-Prime: Advances in Electrical Engineering, Electronics and Energy2772-67112023-09-015100231CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structureAmal Igaadi0Rachid El Amraoui1Hicham El Mghari2Laboratory of energy and materials engineering (LEME), Faculty of Sciences and Technologies (FST), Sultan Moulay Slimane University (SMSU), Beni Mellal, MoroccoLaboratory of energy and materials engineering (LEME), Faculty of Sciences and Technologies (FST), Sultan Moulay Slimane University (SMSU), Beni Mellal, MoroccoCorresponding author.; Laboratory of energy and materials engineering (LEME), Faculty of Sciences and Technologies (FST), Sultan Moulay Slimane University (SMSU), Beni Mellal, MoroccoThis paper presents the effects of minichannel geometrical configuration on flow structures, hydrodynamics, and heat transfer behavior of the subcooled flow boiling process in a cooling system with high heat flux. The two-dimensional numerical simulations are quantitatively conducted for dielectric fluid FC-72 as a working fluid in two different configurations (straight and periodic constriction-expansion) of a minichannel mounted vertically at three inlet temperatures (285.35, 304.54, and 325.35 K) at constant mass flux (836.64 kg/m2s) and input heat flux (191,553 W/m2). The predicted results are in excellent agreement with the published experimental data, which proves the efficiency of the present numerical model. In both configurations, the heat transfer coefficient increases with an increase in the inlet temperature. The results show that the periodic constriction-expansion design significantly improves the heat transfer performances of subcooled flow boiling by 21.77–36.9% for Tin = 285.35–325.35 K because the periodic constriction-expansion configuration offers good mixing between layers.http://www.sciencedirect.com/science/article/pii/S2772671123001262Subcooled flow boilingUpflowStraight minichannelPeriodic constriction-expansion minichannelHeat transfer |
| spellingShingle | Amal Igaadi Rachid El Amraoui Hicham El Mghari CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure e-Prime: Advances in Electrical Engineering, Electronics and Energy Subcooled flow boiling Upflow Straight minichannel Periodic constriction-expansion minichannel Heat transfer |
| title | CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure |
| title_full | CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure |
| title_fullStr | CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure |
| title_full_unstemmed | CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure |
| title_short | CFD investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure |
| title_sort | cfd investigation on heat transfer improvement of subcooled flow boiling in a vertical upflow minichannel with straight and enhanced geometrical structure |
| topic | Subcooled flow boiling Upflow Straight minichannel Periodic constriction-expansion minichannel Heat transfer |
| url | http://www.sciencedirect.com/science/article/pii/S2772671123001262 |
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