Part IV: Failure Modeling¶
- 12. Coolant Voiding
- 12.1. Introduction
- 12.2. Liquid Slug Flow Rates
- 12.3. Interface Velocities
- 12.4. Bubble Formation and Collapse
- 12.5. Uniform Vapor Pressure Model: Small Vapor Bubbles
- 12.6. Vapor Pressure Gradient Model: Large Vapor Bubbles
- 12.7. Voiding Due to Gas Release from Failed Fuel Pins
- 12.8. Time Step Controls
- 12.9. Interaction with Other SASSYS-1 Models
- 12.10. Detailed Flow Description
- 12.11. Input Description
- 12.12. Sample Output
- 12.13. Physical Properties of Sodium
- 12.14. References
- 12.15. Nomenclature
- 12.16. Appendices
- 13. CLAP: Cladding Motion Model
- 14. PLUTO2: Non-Voided Channel Fuel Motion Analysis
- 14.1. Introduction and Overview
- 14.2. In‑Pin Fuel Motion
- 14.3. Fuel and Fission-gas Ejection from the Pins
- 14.4. Channel Hydrodynamics Model
- 14.5. Temperature Calculation of Cladding, Structure, Reflector and Liquid Sodium Slugs
- 14.6. Interaction with the Point Kinetics and the Primary Loop Module
- 14.7. Code Logic Description
- 14.8. Description of Input to and Output of the PLUTO2 Module
- 14.9. References
- 14.10. Nomenclature
- 15. PINACLE: In-Pin Pre-Failure Molten Fuel Relocation Module
- 16. LEVITATE: Voided Fuel Motion
- 16.1. Overview
- 16.2. In-pin Hydrodynamic Model
- 16.3. Fuel Ejection from the Pins and Fuel-pin Disruption
- 16.4. Coolant Channel Hydrodynamic Model
- 16.5. Freezing, Melting and Heat-transfer Processes Related to Stationary Pin Stubs and Hexcan Wall
- 16.6. LEVITATE Interaction with Other Modules
- 16.7. Detailed Logic Flow Description
- 16.8. Input Parameters Relevant to LEVITATE
- 16.9. Output Description
- 16.10. References
- 16.11. Nomenclature