Numerical Investigation on Bubble Growth and Sliding Process of Subcooled Flow Boiling in Narrow Rectangular Channel
In order to investigate single bubble evolution, a boiling phase change model in subcooled flow boiling is proposed in this paper, and VOF model combined with phase change model is adopted to simulate the single bubble growth and movement. The effects of flow velocity, liquid subcooling, wall superh...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2016/7253907 |
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| author | De-wen Yuan Zejun Xiao Deqi Chen Yunke Zhong Xiao Yan Jianjun Xu Yanping Huang |
| author_facet | De-wen Yuan Zejun Xiao Deqi Chen Yunke Zhong Xiao Yan Jianjun Xu Yanping Huang |
| author_sort | De-wen Yuan |
| collection | DOAJ |
| description | In order to investigate single bubble evolution, a boiling phase change model in subcooled flow boiling is proposed in this paper, and VOF model combined with phase change model is adopted to simulate the single bubble growth and movement. The effects of flow velocity, liquid subcooling, wall superheat, and vapor-liquid contact angle are considered in this model. The predicted bubble growth curve agrees well with the experimental result. Based on the analysis of bubble shape evolution and temperature field, it is found that the average bubble growth rate, flow velocity, and dynamic contact angle have significant effect on the bubble shape evolution during the bubble growth and movement while the temperature gradient in superheated liquid does not change with bubble growing. The character of dynamic contact angle during bubble growth and movement is also obtained in different working condition. |
| format | Article |
| id | doaj-art-afa1e39b55cf41b0a8a21bf5ac5d90cb |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-afa1e39b55cf41b0a8a21bf5ac5d90cb2025-02-03T07:26:00ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832016-01-01201610.1155/2016/72539077253907Numerical Investigation on Bubble Growth and Sliding Process of Subcooled Flow Boiling in Narrow Rectangular ChannelDe-wen Yuan0Zejun Xiao1Deqi Chen2Yunke Zhong3Xiao Yan4Jianjun Xu5Yanping Huang6CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610041, ChinaCNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610041, ChinaKey Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400044, ChinaKey Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400044, ChinaCNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610041, ChinaCNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610041, ChinaCNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610041, ChinaIn order to investigate single bubble evolution, a boiling phase change model in subcooled flow boiling is proposed in this paper, and VOF model combined with phase change model is adopted to simulate the single bubble growth and movement. The effects of flow velocity, liquid subcooling, wall superheat, and vapor-liquid contact angle are considered in this model. The predicted bubble growth curve agrees well with the experimental result. Based on the analysis of bubble shape evolution and temperature field, it is found that the average bubble growth rate, flow velocity, and dynamic contact angle have significant effect on the bubble shape evolution during the bubble growth and movement while the temperature gradient in superheated liquid does not change with bubble growing. The character of dynamic contact angle during bubble growth and movement is also obtained in different working condition.http://dx.doi.org/10.1155/2016/7253907 |
| spellingShingle | De-wen Yuan Zejun Xiao Deqi Chen Yunke Zhong Xiao Yan Jianjun Xu Yanping Huang Numerical Investigation on Bubble Growth and Sliding Process of Subcooled Flow Boiling in Narrow Rectangular Channel Science and Technology of Nuclear Installations |
| title | Numerical Investigation on Bubble Growth and Sliding Process of Subcooled Flow Boiling in Narrow Rectangular Channel |
| title_full | Numerical Investigation on Bubble Growth and Sliding Process of Subcooled Flow Boiling in Narrow Rectangular Channel |
| title_fullStr | Numerical Investigation on Bubble Growth and Sliding Process of Subcooled Flow Boiling in Narrow Rectangular Channel |
| title_full_unstemmed | Numerical Investigation on Bubble Growth and Sliding Process of Subcooled Flow Boiling in Narrow Rectangular Channel |
| title_short | Numerical Investigation on Bubble Growth and Sliding Process of Subcooled Flow Boiling in Narrow Rectangular Channel |
| title_sort | numerical investigation on bubble growth and sliding process of subcooled flow boiling in narrow rectangular channel |
| url | http://dx.doi.org/10.1155/2016/7253907 |
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