Numerical Study of Bubble Rising and Coalescence Characteristics under Flow Pulsation Based on Particle Method
Two-phase flow instability may occur in nuclear reactor systems, which is often accompanied by periodic fluctuation in fluid flow rate. In this study, bubble rising and coalescence characteristics under inlet flow pulsation condition are analyzed based on the MPS-MAFL method. To begin with, the sing...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2019/2045751 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832564721992073216 |
|---|---|
| author | Ronghua Chen Minghao Zhang Kailun Guo Dawei Zhao Wenxi Tian Guanghui Su Suizheng Qiu |
| author_facet | Ronghua Chen Minghao Zhang Kailun Guo Dawei Zhao Wenxi Tian Guanghui Su Suizheng Qiu |
| author_sort | Ronghua Chen |
| collection | DOAJ |
| description | Two-phase flow instability may occur in nuclear reactor systems, which is often accompanied by periodic fluctuation in fluid flow rate. In this study, bubble rising and coalescence characteristics under inlet flow pulsation condition are analyzed based on the MPS-MAFL method. To begin with, the single bubble rising behavior under flow pulsation condition was simulated. The simulation results show that the bubble shape and rising velocity fluctuate periodically as same as the inlet flow rate. Additionally, the bubble pairs’ coalescence behavior under flow pulsation condition was simulated and compared with static condition results. It is found that the coalescence time of bubble pairs slightly increased under the pulsation condition, and then the bubbles will continue to pulsate with almost the same period as the inlet flow rate after coalescence. In view of these facts, this study could offer theory support and method basis to a better understanding of the two-phase flow configuration under flow pulsation condition. |
| format | Article |
| id | doaj-art-fb43e4152d3745e48bf9020f4aa2ee20 |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-fb43e4152d3745e48bf9020f4aa2ee202025-02-03T01:10:26ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832019-01-01201910.1155/2019/20457512045751Numerical Study of Bubble Rising and Coalescence Characteristics under Flow Pulsation Based on Particle MethodRonghua Chen0Minghao Zhang1Kailun Guo2Dawei Zhao3Wenxi Tian4Guanghui Su5Suizheng Qiu6School of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28, Xianning West road, Xi’an 710049, ChinaSchool of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28, Xianning West road, Xi’an 710049, ChinaSchool of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28, Xianning West road, Xi’an 710049, ChinaCNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, No. 328, Section 1, Changshun Avenue, Chengdu 610213, ChinaSchool of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28, Xianning West road, Xi’an 710049, ChinaSchool of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28, Xianning West road, Xi’an 710049, ChinaSchool of Nuclear Science and Technology, Xi’an Jiaotong University, No. 28, Xianning West road, Xi’an 710049, ChinaTwo-phase flow instability may occur in nuclear reactor systems, which is often accompanied by periodic fluctuation in fluid flow rate. In this study, bubble rising and coalescence characteristics under inlet flow pulsation condition are analyzed based on the MPS-MAFL method. To begin with, the single bubble rising behavior under flow pulsation condition was simulated. The simulation results show that the bubble shape and rising velocity fluctuate periodically as same as the inlet flow rate. Additionally, the bubble pairs’ coalescence behavior under flow pulsation condition was simulated and compared with static condition results. It is found that the coalescence time of bubble pairs slightly increased under the pulsation condition, and then the bubbles will continue to pulsate with almost the same period as the inlet flow rate after coalescence. In view of these facts, this study could offer theory support and method basis to a better understanding of the two-phase flow configuration under flow pulsation condition.http://dx.doi.org/10.1155/2019/2045751 |
| spellingShingle | Ronghua Chen Minghao Zhang Kailun Guo Dawei Zhao Wenxi Tian Guanghui Su Suizheng Qiu Numerical Study of Bubble Rising and Coalescence Characteristics under Flow Pulsation Based on Particle Method Science and Technology of Nuclear Installations |
| title | Numerical Study of Bubble Rising and Coalescence Characteristics under Flow Pulsation Based on Particle Method |
| title_full | Numerical Study of Bubble Rising and Coalescence Characteristics under Flow Pulsation Based on Particle Method |
| title_fullStr | Numerical Study of Bubble Rising and Coalescence Characteristics under Flow Pulsation Based on Particle Method |
| title_full_unstemmed | Numerical Study of Bubble Rising and Coalescence Characteristics under Flow Pulsation Based on Particle Method |
| title_short | Numerical Study of Bubble Rising and Coalescence Characteristics under Flow Pulsation Based on Particle Method |
| title_sort | numerical study of bubble rising and coalescence characteristics under flow pulsation based on particle method |
| url | http://dx.doi.org/10.1155/2019/2045751 |
| work_keys_str_mv | AT ronghuachen numericalstudyofbubblerisingandcoalescencecharacteristicsunderflowpulsationbasedonparticlemethod AT minghaozhang numericalstudyofbubblerisingandcoalescencecharacteristicsunderflowpulsationbasedonparticlemethod AT kailunguo numericalstudyofbubblerisingandcoalescencecharacteristicsunderflowpulsationbasedonparticlemethod AT daweizhao numericalstudyofbubblerisingandcoalescencecharacteristicsunderflowpulsationbasedonparticlemethod AT wenxitian numericalstudyofbubblerisingandcoalescencecharacteristicsunderflowpulsationbasedonparticlemethod AT guanghuisu numericalstudyofbubblerisingandcoalescencecharacteristicsunderflowpulsationbasedonparticlemethod AT suizhengqiu numericalstudyofbubblerisingandcoalescencecharacteristicsunderflowpulsationbasedonparticlemethod |