16. LEVITATE: Voided Fuel Motion

• 16.1. Overview
  • 16.1.1. Historical Background and Physical Description of the LEVITATE Model
  • 16.1.2. Physical Description of the LEVITATE Model
  • 16.1.3. Interaction of LEVITATE with Other Models within the SAS4A System
  • 16.1.4. Improvements and New Models Relevant to the LEVITATE Module in SAS4A Version 1.1
• 16.2. In-pin Hydrodynamic Model
  • 16.2.1. Physical Models
  • 16.2.2. Method of Solution and General Numerical Considerations
  • 16.2.3. Finite Difference Forms and Solution Technique, Special Situations
• 16.3. Fuel Ejection from the Pins and Fuel-pin Disruption
  • 16.3.1. Fuel Ejection via a Cladding Rupture
  • 16.3.2. Fuel-pin Disruption
  • 16.3.3. Fuel Ejection via the Open Pin Stubs
• 16.4. Coolant Channel Hydrodynamic Model
  • 16.4.1. Physical Models
  • 16.4.2. Method of Solution and general Numerical Considerations
  • 16.4.3. Differential Equations and Finite Difference Equations
• 16.5. Freezing, Melting and Heat-transfer Processes Related to Stationary Pin Stubs and Hexcan Wall
  • 16.5.1. Physical Models
  • 16.5.2. Description of the Method of Solution and Logic Flow
  • 16.5.3. Fuel/steel Freezing and Crust Formation
  • 16.5.4. Fuel Crust Breakup and Remelting
  • 16.5.5. Cladding and Hexcan Ablation
  • 16.5.6. Fuel/Steel Chunk Melting
  • 16.5.7. Heat-transfer Calculation for the Steel Cladding and the Hexcan Wall
• 16.6. LEVITATE Interaction with Other Modules
  • 16.6.1. Interaction with the Point Kinetics Module
  • 16.6.2. Coupling with the Primary Loop Module
• 16.7. Detailed Logic Flow Description
  • 16.7.1. Data Management Considerations
  • 16.7.2. Logic Flow for Solution Advancement
  • 16.7.3. Time-step Considerations
  • 16.7.4. List of LEVITATE Subroutines
• 16.8. Input Parameters Relevant to LEVITATE
• 16.9. Output Description
  • 16.9.1. Regular Output
  • 16.9.2. Auxiliary and Debug Output
• 16.10. References
• 16.11. Nomenclature