COBRA/TRAC simulation of the Semiscale S-UT-5 SBLOCA
Conference
·
OSTI ID:6470640
The purpose of the COBRA/TRAC simulation of Semiscale Test S-UT-5 is to study the capability of COBRA/TRAC to predict the system response in a 2.5% small-break LOCA (SBLOCA) and the effects of upper head injection (UHI) on core behavior. In addition, it serves to verify the capability of the code to simulate the integrated configuration of a PWR. The COBRA/TRAC code uses a set of compressible three-dimensional, two-fluid, three-field equations to represent two-phase flow in the reactor vessel and steam generators. The three fields are the vapor field, the continuous liquid field, and the liquid drop field. A five-equation drift flux model is used to model fluid flow in the primary system piping, pressurizer, pumps, and accumulators. The heat generation rate of the core is specified by input and no reactor kinetics calculations are included in the solution.
- Research Organization:
- Pacific Northwest Labs., Richland, WA (USA); Numerical Applications, Inc., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6470640
- Report Number(s):
- PNL-SA-12814; CONF-850610-49; ON: TI85017897
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200 -- Power Reactors
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ACCIDENTS
ACCUMULATORS
BOILERS
COMPUTER CODES
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PIPES
PRESSURIZERS
PRIMARY COOLANT CIRCUITS
PUMPS
PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR CORES
REACTOR SAFETY
REACTOR VESSELS
REACTORS
RISK ASSESSMENT
SAFETY
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STEAM GENERATORS
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ACCIDENTS
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CONTROL EQUIPMENT
COOLING SYSTEMS
ENERGY SYSTEMS
ENERGY TRANSFER
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
HEAT TRANSFER
HYDRAULICS
LOSS OF COOLANT
MECHANICS
PIPES
PRESSURIZERS
PRIMARY COOLANT CIRCUITS
PUMPS
PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTOR CORES
REACTOR SAFETY
REACTOR VESSELS
REACTORS
RISK ASSESSMENT
SAFETY
SIMULATION
STEAM GENERATORS
TANKS
THREE-DIMENSIONAL CALCULATIONS
TWO-PHASE FLOW
VALVES
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS