Singular Perturbation Analysis of Limit Cycle Behavior in Nuclear-Coupled Density-Wave Oscillations
| Autor: | Mary E. Ward, John C. Lee |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
Physics
010308 nuclear & particles physics Oscillation 0211 other engineering and technologies Thermodynamics 02 engineering and technology Mechanics 01 natural sciences Density wave theory Nonlinear system Amplitude Nuclear Energy and Engineering Limit cycle 0103 physical sciences Boiling water reactor Relaxation (physics) 021108 energy Perturbation theory |
| Zdroj: | Nuclear Science and Engineering. 97:190-202 |
| ISSN: | 1943-748X 0029-5639 |
| DOI: | 10.13182/nse87-a23501 |
| Popis: | An investigation of the potential behavior of large amplitude nuclear-coupled density-wave oscillations in a boiling water reactor (BWR) was performed. A simplified, nonlinear BWR core model was developed and used to predict the growth of oscillations as a limit cycle is approached. For high-power/low-flow initial conditions, large density-wave oscillations could cause periodic pulses in core power. The fuel temperature, which rapidly increases at high-power conditions and slowly recovers, is considered as the fast variable in a relaxation oscillation. With an appropriate transformation of the system equations, the approximate limit cycle trajectory can therefore be determined using singular perturbation analysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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