Nonlinear phenomena of a supercritical water heated channel natural circulation loop
The passive feature of a supercritical natural circulation loop (NCL) has promising applications in various fields. The nonlinear natures of a NCL using supercritical water are explored by a dimensionless dynamic model developed in this study, particularly regarding the occurrence of instability. Th...
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AIP Publishing LLC
2024-12-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0231260 |
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| author | Jin Der Lee Shao Wen Chen |
| author_facet | Jin Der Lee Shao Wen Chen |
| author_sort | Jin Der Lee |
| collection | DOAJ |
| description | The passive feature of a supercritical natural circulation loop (NCL) has promising applications in various fields. The nonlinear natures of a NCL using supercritical water are explored by a dimensionless dynamic model developed in this study, particularly regarding the occurrence of instability. The results demonstrate that the outlet flow resistance of the heated channel will significantly influence the stability and nonlinear behaviors of this supercritical water NCL. Complex nonlinear phenomena would take place in the system while the heated channel is subject to a relatively large outlet flow resistance. A route toward chaotic oscillation can be evolved from periodic oscillations by means of period-doubling bifurcations. The examinations by fast Fourier transform analysis and sensitivity to initial conditions further confirm the existence of chaotic oscillation. The bifurcation phenomena can be inspected by the variations in the fundamental dimensionless frequencies of periodic oscillations. In addition, the indication of period three point implies that innumerable periodic and chaotic kinds of nonlinear oscillations can prevail in the unstable area of this supercritical water NCL under some specific operating conditions. |
| format | Article |
| id | doaj-art-b903d23728dc48b989503774b44cfc63 |
| institution | DOAJ |
| issn | 2158-3226 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj-art-b903d23728dc48b989503774b44cfc632025-08-20T02:56:31ZengAIP Publishing LLCAIP Advances2158-32262024-12-011412125030125030-1110.1063/5.0231260Nonlinear phenomena of a supercritical water heated channel natural circulation loopJin Der Lee0Shao Wen Chen1Nuclear Science and Technology Development Center, National Tsing Hua University, 101, Sec. 2, Kuangfu Rd., Hsinchu 30013, TaiwanDepartment of Engineering and System Science and Institute of Nuclear Engineering and Science, National Tsing Hua University, 101, Sec. 2, Kuangfu Rd., Hsinchu 30013, TaiwanThe passive feature of a supercritical natural circulation loop (NCL) has promising applications in various fields. The nonlinear natures of a NCL using supercritical water are explored by a dimensionless dynamic model developed in this study, particularly regarding the occurrence of instability. The results demonstrate that the outlet flow resistance of the heated channel will significantly influence the stability and nonlinear behaviors of this supercritical water NCL. Complex nonlinear phenomena would take place in the system while the heated channel is subject to a relatively large outlet flow resistance. A route toward chaotic oscillation can be evolved from periodic oscillations by means of period-doubling bifurcations. The examinations by fast Fourier transform analysis and sensitivity to initial conditions further confirm the existence of chaotic oscillation. The bifurcation phenomena can be inspected by the variations in the fundamental dimensionless frequencies of periodic oscillations. In addition, the indication of period three point implies that innumerable periodic and chaotic kinds of nonlinear oscillations can prevail in the unstable area of this supercritical water NCL under some specific operating conditions.http://dx.doi.org/10.1063/5.0231260 |
| spellingShingle | Jin Der Lee Shao Wen Chen Nonlinear phenomena of a supercritical water heated channel natural circulation loop AIP Advances |
| title | Nonlinear phenomena of a supercritical water heated channel natural circulation loop |
| title_full | Nonlinear phenomena of a supercritical water heated channel natural circulation loop |
| title_fullStr | Nonlinear phenomena of a supercritical water heated channel natural circulation loop |
| title_full_unstemmed | Nonlinear phenomena of a supercritical water heated channel natural circulation loop |
| title_short | Nonlinear phenomena of a supercritical water heated channel natural circulation loop |
| title_sort | nonlinear phenomena of a supercritical water heated channel natural circulation loop |
| url | http://dx.doi.org/10.1063/5.0231260 |
| work_keys_str_mv | AT jinderlee nonlinearphenomenaofasupercriticalwaterheatedchannelnaturalcirculationloop AT shaowenchen nonlinearphenomenaofasupercriticalwaterheatedchannelnaturalcirculationloop |