Numerical study on subcooled water jet impingement cooling on superheated surfaces
The present study aims to numerically investigate the rapid cooling heat transfer characteristics of the superheated solid surfaces when the subcooled water jet impinges. The computational fluid dynamics (CFD) simulation was carried out by considering boiling and condensation heat transfer to estima...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-04-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X22001290 |
| _version_ | 1819079157079867392 |
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| author | Joo Hyun Moon Soyeong Lee Jungho Lee Seong Hyuk Lee |
| author_facet | Joo Hyun Moon Soyeong Lee Jungho Lee Seong Hyuk Lee |
| author_sort | Joo Hyun Moon |
| collection | DOAJ |
| description | The present study aims to numerically investigate the rapid cooling heat transfer characteristics of the superheated solid surfaces when the subcooled water jet impinges. The computational fluid dynamics (CFD) simulation was carried out by considering boiling and condensation heat transfer to estimate key design parameters such as wall heat flux, heat transfer coefficient, and surface temperature variation using the volume-of-fluid (VOF) model. The simulated results agreed well with the experimental data of the surface temperature and the wall heat flux at the stagnation point. The water vapors formed near the stagnation point and rapidly propagated radially after impact. Also, strong vorticity was found in a radial direction, resulting in a vapor blanket. The result showed that the vapor blanket prevented the liquid flows from directly contacting the heated surface, decreasing the heat transfer. In particular, the surface temperature in the radial direction cooled down more rapidly than that in the vertical direction because of higher boiling heat transfer within a wetting radius where the heat transfer coefficient became higher owing to the liquid wetting. |
| first_indexed | 2024-12-21T19:24:31Z |
| format | Article |
| id | doaj.art-9e738d25fc4547f48897f63f6c09ec49 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-12-21T19:24:31Z |
| publishDate | 2022-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-9e738d25fc4547f48897f63f6c09ec492022-12-21T18:52:53ZengElsevierCase Studies in Thermal Engineering2214-157X2022-04-0132101883Numerical study on subcooled water jet impingement cooling on superheated surfacesJoo Hyun Moon0Soyeong Lee1Jungho Lee2Seong Hyuk Lee3Department of Mechanical and Aerospace Engineering, Sejong University, Seoul, 05006, Republic of KoreaSchool of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of KoreaDepartment of Mechanical Engineering, Ajou University, Suwon, 16499, Republic of Korea; Corresponding author. Department of Mechanical Engineering, Ajou University, Suwon, 16499, Republic of Korea.School of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea; Department of Intelligent Energy and Industry, Chung-Ang University, Seoul, 06974, Republic of Korea; Corresponding author. School of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea.The present study aims to numerically investigate the rapid cooling heat transfer characteristics of the superheated solid surfaces when the subcooled water jet impinges. The computational fluid dynamics (CFD) simulation was carried out by considering boiling and condensation heat transfer to estimate key design parameters such as wall heat flux, heat transfer coefficient, and surface temperature variation using the volume-of-fluid (VOF) model. The simulated results agreed well with the experimental data of the surface temperature and the wall heat flux at the stagnation point. The water vapors formed near the stagnation point and rapidly propagated radially after impact. Also, strong vorticity was found in a radial direction, resulting in a vapor blanket. The result showed that the vapor blanket prevented the liquid flows from directly contacting the heated surface, decreasing the heat transfer. In particular, the surface temperature in the radial direction cooled down more rapidly than that in the vertical direction because of higher boiling heat transfer within a wetting radius where the heat transfer coefficient became higher owing to the liquid wetting.http://www.sciencedirect.com/science/article/pii/S2214157X22001290Computational fluid dynamicsSubcooled water jet impingementHeat fluxBoiling |
| spellingShingle | Joo Hyun Moon Soyeong Lee Jungho Lee Seong Hyuk Lee Numerical study on subcooled water jet impingement cooling on superheated surfaces Case Studies in Thermal Engineering Computational fluid dynamics Subcooled water jet impingement Heat flux Boiling |
| title | Numerical study on subcooled water jet impingement cooling on superheated surfaces |
| title_full | Numerical study on subcooled water jet impingement cooling on superheated surfaces |
| title_fullStr | Numerical study on subcooled water jet impingement cooling on superheated surfaces |
| title_full_unstemmed | Numerical study on subcooled water jet impingement cooling on superheated surfaces |
| title_short | Numerical study on subcooled water jet impingement cooling on superheated surfaces |
| title_sort | numerical study on subcooled water jet impingement cooling on superheated surfaces |
| topic | Computational fluid dynamics Subcooled water jet impingement Heat flux Boiling |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X22001290 |
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