Numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation model
Cavitation frequently arises in the safety valve of nuclear power plants’ secondary circuits operating under high pressure conditions. This study integrates valve flow characteristics and velocity strain rate corrections into the Zwart-Gerber-Belamri model to accurately simulate cavitation inside th...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-12-01
|
| Series: | Engineering Applications of Computational Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/19942060.2023.2251546 |
| _version_ | 1797403939379871744 |
|---|---|
| author | Qingye Li Shuai Zhang Muchen Wang Chaoyong Zong Xuyang Li Xueguan Song |
| author_facet | Qingye Li Shuai Zhang Muchen Wang Chaoyong Zong Xuyang Li Xueguan Song |
| author_sort | Qingye Li |
| collection | DOAJ |
| description | Cavitation frequently arises in the safety valve of nuclear power plants’ secondary circuits operating under high pressure conditions. This study integrates valve flow characteristics and velocity strain rate corrections into the Zwart-Gerber-Belamri model to accurately simulate cavitation inside the valve, reducing the impact of physical empirical coefficient variations on cavitation length prediction. Subsequently, a visualisation test rig is developed to validate the accuracy of the numerical model, and experimental cavitation results are obtained using the grayscale detection method. The evaporation/condensation coefficients are optimised using the AES-MSI model and GA based on the experimental results. The accuracy of the constructed model is validated by comparing it with experimental results obtained under various operating conditions. Finally, the high-fidelity numerical model is employed to investigate the effects of pressure drop and valve openings on cavitation, elucidating the underlying mechanisms governing cavitation variations resulting from pressure drops. Furthermore, a comprehensive equation is derived to determine the effective flow area, aiding in the identification of cavitation locations and offering insights into the relationship between cavitation behaviour and valve openings. The modified cavitation model proposed in this study can be readily extended to investigate cavitation prediction in other valves or throttle elements. |
| first_indexed | 2024-03-09T02:45:49Z |
| format | Article |
| id | doaj.art-e467f292cc2342cca082ed9a901e9c19 |
| institution | Directory Open Access Journal |
| issn | 1994-2060 1997-003X |
| language | English |
| last_indexed | 2024-03-09T02:45:49Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Engineering Applications of Computational Fluid Mechanics |
| spelling | doaj.art-e467f292cc2342cca082ed9a901e9c192023-12-05T16:53:44ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2023-12-0117110.1080/19942060.2023.2251546Numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation modelQingye Li0Shuai Zhang1Muchen Wang2Chaoyong Zong3Xuyang Li4Xueguan Song5School of Mechanical Engineering, Dalian University of Technology, Dalian, People’s Republic of ChinaSchool of Mechanical Engineering, Dalian University of Technology, Dalian, People’s Republic of ChinaSchool of Mechanical Engineering, Dalian University of Technology, Dalian, People’s Republic of ChinaCollege of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, People’s Republic of ChinaSchool of Mechanical Engineering, Dalian University of Technology, Dalian, People’s Republic of ChinaSchool of Mechanical Engineering, Dalian University of Technology, Dalian, People’s Republic of ChinaCavitation frequently arises in the safety valve of nuclear power plants’ secondary circuits operating under high pressure conditions. This study integrates valve flow characteristics and velocity strain rate corrections into the Zwart-Gerber-Belamri model to accurately simulate cavitation inside the valve, reducing the impact of physical empirical coefficient variations on cavitation length prediction. Subsequently, a visualisation test rig is developed to validate the accuracy of the numerical model, and experimental cavitation results are obtained using the grayscale detection method. The evaporation/condensation coefficients are optimised using the AES-MSI model and GA based on the experimental results. The accuracy of the constructed model is validated by comparing it with experimental results obtained under various operating conditions. Finally, the high-fidelity numerical model is employed to investigate the effects of pressure drop and valve openings on cavitation, elucidating the underlying mechanisms governing cavitation variations resulting from pressure drops. Furthermore, a comprehensive equation is derived to determine the effective flow area, aiding in the identification of cavitation locations and offering insights into the relationship between cavitation behaviour and valve openings. The modified cavitation model proposed in this study can be readily extended to investigate cavitation prediction in other valves or throttle elements.https://www.tandfonline.com/doi/10.1080/19942060.2023.2251546Safety valvecavitation modelnuclear power plantCFDvisualisation experiments |
| spellingShingle | Qingye Li Shuai Zhang Muchen Wang Chaoyong Zong Xuyang Li Xueguan Song Numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation model Engineering Applications of Computational Fluid Mechanics Safety valve cavitation model nuclear power plant CFD visualisation experiments |
| title | Numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation model |
| title_full | Numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation model |
| title_fullStr | Numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation model |
| title_full_unstemmed | Numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation model |
| title_short | Numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation model |
| title_sort | numerical and experimental analysis of cavitation characteristics in safety valves of the nuclear power second circuit using a modified cavitation model |
| topic | Safety valve cavitation model nuclear power plant CFD visualisation experiments |
| url | https://www.tandfonline.com/doi/10.1080/19942060.2023.2251546 |
| work_keys_str_mv | AT qingyeli numericalandexperimentalanalysisofcavitationcharacteristicsinsafetyvalvesofthenuclearpowersecondcircuitusingamodifiedcavitationmodel AT shuaizhang numericalandexperimentalanalysisofcavitationcharacteristicsinsafetyvalvesofthenuclearpowersecondcircuitusingamodifiedcavitationmodel AT muchenwang numericalandexperimentalanalysisofcavitationcharacteristicsinsafetyvalvesofthenuclearpowersecondcircuitusingamodifiedcavitationmodel AT chaoyongzong numericalandexperimentalanalysisofcavitationcharacteristicsinsafetyvalvesofthenuclearpowersecondcircuitusingamodifiedcavitationmodel AT xuyangli numericalandexperimentalanalysisofcavitationcharacteristicsinsafetyvalvesofthenuclearpowersecondcircuitusingamodifiedcavitationmodel AT xueguansong numericalandexperimentalanalysisofcavitationcharacteristicsinsafetyvalvesofthenuclearpowersecondcircuitusingamodifiedcavitationmodel |