Experimental and analytical study of loss-of-flow transients in EBR-II occurring at decay power levels
A series of eight loss-of-flow (LOF) tests have been conducted in EBR-II to study the transition between forced and natural convective flows following a variety of loss-of-primary-pumping power conditions from decay heat levels. Comparisons of measurements and pretest/posttest predictions were made on a selected test. Good agreements between measurements and predictions was found prior to and just after the flow reaching its minimum, but the agreement is not as good after that point. The temperatures are consistent with the flow response and the assumed decay power. The measured results indicate that the flows of driver and the instrumented subassemblies are too much in the analytical model in the natural convective region. Although a parametric study on secondary flow, turbulent-laminar flow transition, heat transfer ability of the intermediate heat exchange at low flow and flow mixing in the primary tank has been performed to determine their effects on the flow, the cause of the discrepancy at very low flow level is still unknown.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6470877
- Report Number(s):
- CONF-851201-4; ON: DE86004064
- Resource Relation:
- Conference: 7. Miami international conference on alternative energy sources, Miami Beach, FL, USA, 9 Dec 1985
- Country of Publication:
- United States
- Language:
- English
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LOSS OF FLOW
AFTER-HEAT REMOVAL
FORCED CONVECTION
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ACCIDENTS
BREEDER REACTORS
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ENERGY TRANSFER
EPITHERMAL REACTORS
EXPERIMENTAL REACTORS
FAST REACTORS
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LIQUID METAL COOLED REACTORS
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RESEARCH AND TEST REACTORS
SODIUM COOLED REACTORS
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