Natural Circulation Characteristics of a Symmetric Loop under Inclined Conditions
Natural circulation is an important process for primary loops of some marine integrated reactors. The reactor works under inclined conditions when severe accidents happen to the ship. In this paper, to investigate the characteristics of natural circulation, experiments were conducted in a symmetric...
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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/10.1155/2014/925760 |
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| author | Xingtuan Yang Yanfei Sun Zhiyong Liu Shengyao Jiang |
| author_facet | Xingtuan Yang Yanfei Sun Zhiyong Liu Shengyao Jiang |
| author_sort | Xingtuan Yang |
| collection | DOAJ |
| description | Natural circulation is an important process for primary loops of some marine integrated reactors. The reactor works under inclined conditions when severe accidents happen to the ship. In this paper, to investigate the characteristics of natural circulation, experiments were conducted in a symmetric loop under the inclined angle of 0~45°. A CFD model was also set up to predict the behaviors of the loop beyond the experimental scope. Total circulation flow rate decreases with the increase of inclined angle. Meanwhile one circulation is depressed while the other is enhanced, and accordingly the disparity between the branch circulations arises and increases with the increase of inclined angle. Circulation only takes place in one branch circuit at large inclined angle. Also based on the CFD model, the influences of flow resistance distribution and loop configuration on natural circulation are predicted. The numerical results show that to design the loop with the configuration of big altitude difference and small width, it is favorable to reduce the influence of inclination; however too small loop width will cause severe reduction of circulation ability at large angle inclination. |
| format | Article |
| id | doaj-art-1ac5df1ebee846aa88f51e7c49ac2003 |
| 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-1ac5df1ebee846aa88f51e7c49ac20032025-02-03T01:20:59ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832014-01-01201410.1155/2014/925760925760Natural Circulation Characteristics of a Symmetric Loop under Inclined ConditionsXingtuan Yang0Yanfei Sun1Zhiyong Liu2Shengyao Jiang3Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, ChinaKey Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, ChinaKey Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, ChinaKey Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Institute of Nuclear and New Energy Technology of Tsinghua University, Beijing 100084, ChinaNatural circulation is an important process for primary loops of some marine integrated reactors. The reactor works under inclined conditions when severe accidents happen to the ship. In this paper, to investigate the characteristics of natural circulation, experiments were conducted in a symmetric loop under the inclined angle of 0~45°. A CFD model was also set up to predict the behaviors of the loop beyond the experimental scope. Total circulation flow rate decreases with the increase of inclined angle. Meanwhile one circulation is depressed while the other is enhanced, and accordingly the disparity between the branch circulations arises and increases with the increase of inclined angle. Circulation only takes place in one branch circuit at large inclined angle. Also based on the CFD model, the influences of flow resistance distribution and loop configuration on natural circulation are predicted. The numerical results show that to design the loop with the configuration of big altitude difference and small width, it is favorable to reduce the influence of inclination; however too small loop width will cause severe reduction of circulation ability at large angle inclination.http://dx.doi.org/10.1155/2014/925760 |
| spellingShingle | Xingtuan Yang Yanfei Sun Zhiyong Liu Shengyao Jiang Natural Circulation Characteristics of a Symmetric Loop under Inclined Conditions Science and Technology of Nuclear Installations |
| title | Natural Circulation Characteristics of a Symmetric Loop under Inclined Conditions |
| title_full | Natural Circulation Characteristics of a Symmetric Loop under Inclined Conditions |
| title_fullStr | Natural Circulation Characteristics of a Symmetric Loop under Inclined Conditions |
| title_full_unstemmed | Natural Circulation Characteristics of a Symmetric Loop under Inclined Conditions |
| title_short | Natural Circulation Characteristics of a Symmetric Loop under Inclined Conditions |
| title_sort | natural circulation characteristics of a symmetric loop under inclined conditions |
| url | http://dx.doi.org/10.1155/2014/925760 |
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