Experimental and numerical stability investigations on natural circulation boiling water reactors.
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Author / Creator: | Marcel, Christian Pablo. |
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Imprint: | Amsterdam : Delft University Press, IOS Press, ©2007. |
Description: | 1 online resource (xvii, 141 pages) : illustrations |
Language: | English |
Subject: | |
Format: | E-Resource Book |
URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/11169766 |
Table of Contents:
- Title Page; Table of Contents; Summary; Samenvatting; Chapter 1. Introduction; Introduction; Natural circulation BWRs basic principle; Classification of BWR instabilities; High Pressure vs. Low Pressure stability; Coupled Neutronics-Thermal-hydraulics; Motivation behind the present work; Outline of this thesis; References; Chapter 2. Downscaling the thermal-hydraulics of natural circulation BWRs: The GENESIS facility; Introduction; Design philosophy-The scaling; Defining the operational conditions; Geometrical scaling; Scaling of the dynamics; Treatment of the distortions.
- Scaling sensitivity to the operational pressureApplication of the proposed scaling design approach; Conclusions; References; Chapter 3. Experimental investigations on the stability of natural circulation BWRs; Introduction; The VRF system; The VRF system design; The VRF system implementation; Stability performance of natural circulation BWRs; Experiments on thermal-hydraulic stability; Experiments on reactor-kinetic stability; The ATHLET numerial results; Conclusions; References; Chapter 4. An experimental parametric study of natural circulation BWRs stability; Introduction.
- GENESIS improvementsParametric study; Effect of the improved VRF system; Effect of the modeling of the ESBWR fuel rods; Effect of changing the rod diameter; Effect of using a MOX fuel; Effect of the pressure; Effect of the feedwater sparger position; Effect of the void reactivity feedback coefficient; Conclusions; References; Chapter 5. Experimental and analytical investigations on flashing-induced instabilities in a single channel; Introduction; The CIRCUS facility in the single chimney configuration; Experimental results; The stability maps; Dynamical characterization of the instabilities.
- From single-phase to stable two-phase flowHigh subcooling stable flow circulation; Intermittent oscillations; Sinusoidal oscillations; Low subcooling stable flow circulation; Analysis of the dynamics of the flashing front; Analysis of the inertia of the loop; A lumped parameter model; Experimental results vs. numerical results; A numerical parametric study; Conclusions; References; Chapter 6. Flashing-induced oscillations in parallel channels; Introduction; Description of the CIRCUS facility with two chimneys; Experimental results; The stability behavior.
- Phenomenological description-From region I to IVRegion I-High subcooling stable flow circulation; Region II-Unstable in-phase flow circulation; Region III-Unstable a-periodical oscillations; Region IV-Unstable out-of-phase oscillations; Analysis of the instability mechanism; Single channel stability vs. two-parallel channels stability; Non-linear analysis of the oscillations; Experimental evidence of bifurcations; Investigations on the nature of the a-periodical oscillations; Conclusions; References; Chapter 7. Conclusions and recommendations; APPENDICES.