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- W2273256456 abstract "This paper contains an evaluation of the LAPUR6 code against stability data measured in the GENESIS facility in Delft University of Technology, Netherlands. The LAPUR code has been validated in the past against a reasonable array of BWR test data. The GENESIS facility is located in the Reactor Institute of Delft University of Technology, Netherlands. It is a boiling, natural circulation facility where flows, void fraction, and density wave instabilities can be studied over a wide range of conditions. The facility was initially constructed to simulate the conditions of the ESBWR design and was scaled so that, using Freon 134a at low power, the results could be extrapolated to water at full ESBWR power and pressure. The GENESIS facility may be run on purely thermal-hydraulic mode, by keeping the thermal power constant, or with a simulated reactor neutronic feedback. For the later purpose, the core pressure drop is measured and the core-average void fraction is estimated based on a one-channel model. The reactivity feedback and the fuel response are modeled on a control computer, and the thermal power is modulated according to the predicted reactor response. All data used for this benchmark includes the simulated reactivity feedback. Twenty seven GENESIS measurements at different operating conditions were simulated by LAPUR6. All geometry and measurements were scaled to water properties for use in LAPUR6. Ninety two axial nodes were used to model GENEIS (17 for the core and 75 for the chimney). The results of these benchmark calculations show that LAPUR6 predicts an oscillation frequency of ~0.7 Hz, which agrees with the measured frequency, and indicates that the chimney has little or no effect on the dynamic oscillations. The DRs calculated by LAPUR6 are in agreement with those measured in GENESIS." @default.
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- W2273256456 date "2012-01-01" @default.
- W2273256456 modified "2023-09-27" @default.
- W2273256456 title "LAPUR6 BENCHMARK OF STABILITY DATA MEASURED IN THE DELFT UNIVERSITY OF TECHNOLOGY s GENESIS LOOP" @default.
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