A Flashing Simulator for Natural Circulation Heated Systems
Conference
·
OSTI ID:786056
Many of the next generation of nuclear reactors rely on natural circulation, either as the primary mode of heat removal or as a passive safety mechanism. Flashing-induced instabilities are of concern during startup of natural-circulation loops and small-scale natural-circulation light water reactors. (Flashing refers to the beginning of (adiabatic) boiling in the unheated riser when there is no boiling upstream.) A simulator with significantly enhanced modeling and simulation capabilities is being developed to analyze flashing and flashing-induced instabilities. The model allows an arbitrary number of nodes in both the heated section (allowing axially varying heat flux) and in the unheated riser section. Preliminary simulations using the model show that it can capture the location of flashing in the experiments conducted on the Dodewaard reactor very well.
- Research Organization:
- Universita degli Studi ''La Sapienza'' di Roma, Rome (IT); University of Illinois at Urbana-Champaign, Urbana, Illinois (US)
- Sponsoring Organization:
- US Department of Energy; Kramers Laboratorium voor Fysische Technologie, Delft University of Technology (NL) (US)
- OSTI ID:
- 786056
- Report Number(s):
- NONE; ISSN 0003-018X; CODEN TANSAO; ISSN 0003-018X; CODEN TANSAO
- Country of Publication:
- United States
- Language:
- English
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