Direct forcing immersed boundary method for electro-thermo-buoyant flows in enclosures
This study investigates electro-hydrodynamic (EHD) and electro-thermo-hydrodynamic (ETHD) phenomena in dielectric liquids, and focusses on charge injection as a source of unipolar charges. The studied configuration consists of a hot spherical electrode placed in the center of a cold cubic enclosure,...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24014692 |
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| author | Mukesh Kumar Yohay Mayan Yuri Feldman |
| author_facet | Mukesh Kumar Yohay Mayan Yuri Feldman |
| author_sort | Mukesh Kumar |
| collection | DOAJ |
| description | This study investigates electro-hydrodynamic (EHD) and electro-thermo-hydrodynamic (ETHD) phenomena in dielectric liquids, and focusses on charge injection as a source of unipolar charges. The studied configuration consists of a hot spherical electrode placed in the center of a cold cubic enclosure, and is numerically simulated using the direct forcing immersed boundary (IB) method. Flow characteristics for both EHD and ETHD flows within this configuration are thoroughly analyzed, both quantitatively and qualitatively, across a representative range of operating parameters. Analyzing ETHD flows results in a more than threefold increase in heat flux from the hot embedded electrode compared to natural convection alone. This study highlights both the similarities and the differences in flow and heat transfer characteristics between the realistic 3D configuration and its 2D counterpart, paving the way for further application of the direct forcing IB method in the analysis of EHD and ETHD flows typical of realistic configurations. |
| format | Article |
| id | doaj-art-80766bea28684823afa9f1264277686c |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-80766bea28684823afa9f1264277686c2025-08-20T02:37:32ZengElsevierCase Studies in Thermal Engineering2214-157X2024-12-016410543810.1016/j.csite.2024.105438Direct forcing immersed boundary method for electro-thermo-buoyant flows in enclosuresMukesh Kumar0Yohay Mayan1Yuri Feldman2Corresponding author.; Department of Mechanical Eng., Ben-Gurion University of the Negev, Beer-Sheva, IsraelDepartment of Mechanical Eng., Ben-Gurion University of the Negev, Beer-Sheva, IsraelDepartment of Mechanical Eng., Ben-Gurion University of the Negev, Beer-Sheva, IsraelThis study investigates electro-hydrodynamic (EHD) and electro-thermo-hydrodynamic (ETHD) phenomena in dielectric liquids, and focusses on charge injection as a source of unipolar charges. The studied configuration consists of a hot spherical electrode placed in the center of a cold cubic enclosure, and is numerically simulated using the direct forcing immersed boundary (IB) method. Flow characteristics for both EHD and ETHD flows within this configuration are thoroughly analyzed, both quantitatively and qualitatively, across a representative range of operating parameters. Analyzing ETHD flows results in a more than threefold increase in heat flux from the hot embedded electrode compared to natural convection alone. This study highlights both the similarities and the differences in flow and heat transfer characteristics between the realistic 3D configuration and its 2D counterpart, paving the way for further application of the direct forcing IB method in the analysis of EHD and ETHD flows typical of realistic configurations.http://www.sciencedirect.com/science/article/pii/S2214157X24014692Electro-thermo-buoyant flowsImmersed boundary (IB) methodIB-FV solver |
| spellingShingle | Mukesh Kumar Yohay Mayan Yuri Feldman Direct forcing immersed boundary method for electro-thermo-buoyant flows in enclosures Case Studies in Thermal Engineering Electro-thermo-buoyant flows Immersed boundary (IB) method IB-FV solver |
| title | Direct forcing immersed boundary method for electro-thermo-buoyant flows in enclosures |
| title_full | Direct forcing immersed boundary method for electro-thermo-buoyant flows in enclosures |
| title_fullStr | Direct forcing immersed boundary method for electro-thermo-buoyant flows in enclosures |
| title_full_unstemmed | Direct forcing immersed boundary method for electro-thermo-buoyant flows in enclosures |
| title_short | Direct forcing immersed boundary method for electro-thermo-buoyant flows in enclosures |
| title_sort | direct forcing immersed boundary method for electro thermo buoyant flows in enclosures |
| topic | Electro-thermo-buoyant flows Immersed boundary (IB) method IB-FV solver |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24014692 |
| work_keys_str_mv | AT mukeshkumar directforcingimmersedboundarymethodforelectrothermobuoyantflowsinenclosures AT yohaymayan directforcingimmersedboundarymethodforelectrothermobuoyantflowsinenclosures AT yurifeldman directforcingimmersedboundarymethodforelectrothermobuoyantflowsinenclosures |