Some Movement Mechanisms and Characteristics in Pebble Bed Reactor
The pebblebed-type high temperature gas-cooled reactor is considered to be one of the promising solutions for generation IV advanced reactors, and the two-region arranged reactor core can enhance its advantages by flattening neutron flux. However, this application is held back by the existence of mi...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2014/820481 |
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| author | Xingtuan Yang Yu Li Nan Gui Xinlong Jia Jiyuan Tu Shengyao Jiang |
| author_facet | Xingtuan Yang Yu Li Nan Gui Xinlong Jia Jiyuan Tu Shengyao Jiang |
| author_sort | Xingtuan Yang |
| collection | DOAJ |
| description | The pebblebed-type high temperature gas-cooled reactor is considered to be one of the promising solutions for generation IV advanced reactors, and the two-region arranged reactor core can enhance its advantages by flattening neutron flux. However, this application is held back by the existence of mixing zone between central and peripheral regions, which results from pebbles’ dispersion motions. In this study, experiments have been carried out to study the dispersion phenomenon, and the variation of dispersion region and radial distribution of pebbles in the specifically shaped flow field are shown. Most importantly, the standard deviation of pebbles’ radial positions in dispersion region, as a quantitative index to describe the size of dispersion region, is gotten through statistical analysis. Besides, discrete element method has been utilized to analyze the parameter influence on dispersion region, and this practice offers some strategies to eliminate or reduce mixing zone in practical reactors. |
| format | Article |
| id | doaj-art-f36b98c781ea4c6c862c481068d10162 |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-f36b98c781ea4c6c862c481068d101622025-02-03T07:25:09ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832014-01-01201410.1155/2014/820481820481Some Movement Mechanisms and Characteristics in Pebble Bed ReactorXingtuan Yang0Yu Li1Nan Gui2Xinlong Jia3Jiyuan Tu4Shengyao Jiang5Institute of Nuclear and New Energy Technology of Tsinghua University and the Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology of Tsinghua University and the Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology of Tsinghua University and the Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology of Tsinghua University and the Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology of Tsinghua University and the Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, ChinaInstitute of Nuclear and New Energy Technology of Tsinghua University and the Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Beijing 100084, ChinaThe pebblebed-type high temperature gas-cooled reactor is considered to be one of the promising solutions for generation IV advanced reactors, and the two-region arranged reactor core can enhance its advantages by flattening neutron flux. However, this application is held back by the existence of mixing zone between central and peripheral regions, which results from pebbles’ dispersion motions. In this study, experiments have been carried out to study the dispersion phenomenon, and the variation of dispersion region and radial distribution of pebbles in the specifically shaped flow field are shown. Most importantly, the standard deviation of pebbles’ radial positions in dispersion region, as a quantitative index to describe the size of dispersion region, is gotten through statistical analysis. Besides, discrete element method has been utilized to analyze the parameter influence on dispersion region, and this practice offers some strategies to eliminate or reduce mixing zone in practical reactors.http://dx.doi.org/10.1155/2014/820481 |
| spellingShingle | Xingtuan Yang Yu Li Nan Gui Xinlong Jia Jiyuan Tu Shengyao Jiang Some Movement Mechanisms and Characteristics in Pebble Bed Reactor Science and Technology of Nuclear Installations |
| title | Some Movement Mechanisms and Characteristics in Pebble Bed Reactor |
| title_full | Some Movement Mechanisms and Characteristics in Pebble Bed Reactor |
| title_fullStr | Some Movement Mechanisms and Characteristics in Pebble Bed Reactor |
| title_full_unstemmed | Some Movement Mechanisms and Characteristics in Pebble Bed Reactor |
| title_short | Some Movement Mechanisms and Characteristics in Pebble Bed Reactor |
| title_sort | some movement mechanisms and characteristics in pebble bed reactor |
| url | http://dx.doi.org/10.1155/2014/820481 |
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