Interfacial exchange relations for two-fluid vapor-liquid flow: a simplified regime-map approach
The simplified approach to interfacial exchange expressions used in THERMIT has been described here, and it is seen that the nonequilibrium phenomena are predicted in a realistic manner. It is quite apparent that compared to the TRAC-PIA modeling approach, the THERMIT modeling approach is much simpler. Furthermore, it is not obvious that the more sophisticated approach produces more accurate results. In fact, the assessment work has shown that the simpler approach is indeed appropriate. Also, since the models are physically based, it is expected that they will be valid for regimes outside their data bases. This is an important point, since it justifies the use of these models for transients excluding depressurization.
- Research Organization:
- Massachusetts Institute of Technology, Department of Nuclear Engineering, Cambridge, Massachusetts 02139
- OSTI ID:
- 5866649
- Journal Information:
- Nucl. Sci. Eng.; (United States), Vol. 81:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
REACTOR ACCIDENTS
TWO-PHASE FLOW
REACTOR COOLING SYSTEMS
BOUNDARY LAYERS
COMPUTERIZED SIMULATION
COMPUTER CODES
COMPUTERS
EQUILIBRIUM
LIQUIDS
PRESSURE RELEASE
REACTOR SAFETY
T CODES
TRANSIENTS
VAPORS
ACCIDENTS
COOLING SYSTEMS
ENERGY SYSTEMS
FLUID FLOW
FLUIDS
GASES
LAYERS
REACTOR COMPONENTS
SAFETY
SIMULATION
220900* - Nuclear Reactor Technology- Reactor Safety
220100 - Nuclear Reactor Technology- Theory & Calculation
420400 - Engineering- Heat Transfer & Fluid Flow