COBRA/TRAC simulation of the Semiscale S-UT-5 SBLOCA
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
- Resource Relation:
- Conference: Annual meeting of the American Nuclear Society, Boston, MA, USA, 9 Jun 1985
- Country of Publication:
- United States
- Language:
- English
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LOSS OF COOLANT
HEAT TRANSFER
HYDRAULICS
PRIMARY COOLANT CIRCUITS
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ACCUMULATORS
COMPUTER CODES
COMPUTERIZED SIMULATION
PIPES
PRESSURIZERS
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REACTOR CORES
REACTOR SAFETY
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FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
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REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
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VAPOR GENERATORS
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