33 The Peaking at the Edge of Near-Edge Channels is the most Limiting
34 Summary of Power Split and Peaking Factor Results from the Direct Numerical Simulations (all fluxes in kW/m2 )Case No.qupqdnqsqup / qdnqmax / qdn or sA6330N/A2.11.25B120542.2C17880C-3D238683.51.2M-3D286852803.43.0 / 1.4M2551253302.0N1263401.93.0 / 1.2O16883245The 3D results were confirmed with further calculations that includedrefined meshes, and a 10-fold increase in viscosity due to addition ofthe sacrificial concrete.
35 Sample calculations of turbulent natural convection
42 Natural convection boiling in inclined channels: the SULTAN facility Vertical and 10 degrees inclinationCharacteristic length: 3 and 15 cmChannel length: 4 mPressure: 0.5 MPaPower levels 100 to 500 kw/m2Detailed pressure drop dataTop-heated plate, 15 cm wide
43 Boiling in inclined channels: Sample comparisons for inclination
44 Natural convection in BiMAC: stable, self-adjusting flow
45 Thermal Margins for BiMAC no-Dryout due to water depletion or flow starvation
46 Conclusion (3): Summary of containment threats and mitigative mechanisms or systems in place for responding to themThreatFailure ModeMitigationDCHEnergetic DW FailurePressure Suppression VentsReinforced Concrete SupportUDW Liner Thermal FailureLiner Anchoring SystemLDW Liner Thermal FailureReinforced Concrete BarrierGap Separation from UDWEVEPedestal/Liner FailureDimensions and ReinforcementBiMAC FailurePipe Size and ThicknessPipes Embedded into ConcreteBMP&CCIBiMAC Activation FailureSensing & Actuation InstrumentationDiverse/Passive Valve ActionLocal BurnoutNatural CirculationWater DepletionLocal Melt-ThroughRefractory Protective Layer