TY - GEN
T1 - Validation of trace code for flashing-induced density wave oscillations in SIRIUS-N facility, which simulates ESBWR
AU - Furuya, Masahiro
AU - Nishi, Yoshihisa
AU - Ueda, Nobuyuki
PY - 2012/1/1
Y1 - 2012/1/1
N2 - The TRACE code was validated against the flashing-induced density wave oscillation in the SIRIUS-N facility at low pressure (from 0.1 to 0.5 MPa) as a part of the international CAMP-Program of USNRC. The SIRIUS-N facility is a scaled copy of natural circulation BWR (ESBWR). Stability map of TRACE agrees with that of SIRIUS-N facility at low subcooling region, though instability observed in the lower heat flux and higher subcooling region from the stability limit of experiment. The TRACE code demonstrates the flashing-induced density wave oscillation characteristics: The oscillation period correlates well with the transit time of single-phase liquid in the chimney regardless of the system pressure, inlet subcooling, and heat flux. Unlike Type-I and II density wave oscillations, the inlet or exit throttling does not affect stability boundary and oscillation amplitude of flashing-induced density wave oscillations significantly. Increasing pressure decreases oscillation amplitude. The comprehensive validation confirms that the TRACE code can demonstrate thermal-hydraulic stability of natural circulation BWRs.
AB - The TRACE code was validated against the flashing-induced density wave oscillation in the SIRIUS-N facility at low pressure (from 0.1 to 0.5 MPa) as a part of the international CAMP-Program of USNRC. The SIRIUS-N facility is a scaled copy of natural circulation BWR (ESBWR). Stability map of TRACE agrees with that of SIRIUS-N facility at low subcooling region, though instability observed in the lower heat flux and higher subcooling region from the stability limit of experiment. The TRACE code demonstrates the flashing-induced density wave oscillation characteristics: The oscillation period correlates well with the transit time of single-phase liquid in the chimney regardless of the system pressure, inlet subcooling, and heat flux. Unlike Type-I and II density wave oscillations, the inlet or exit throttling does not affect stability boundary and oscillation amplitude of flashing-induced density wave oscillations significantly. Increasing pressure decreases oscillation amplitude. The comprehensive validation confirms that the TRACE code can demonstrate thermal-hydraulic stability of natural circulation BWRs.
UR - http://www.scopus.com/inward/record.url?scp=84890075047&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84890075047&partnerID=8YFLogxK
U2 - 10.1115/ICONE20-POWER2012-55132
DO - 10.1115/ICONE20-POWER2012-55132
M3 - Conference contribution
AN - SCOPUS:84890075047
SN - 9780791844977
T3 - International Conference on Nuclear Engineering, Proceedings, ICONE
SP - 713
EP - 719
BT - 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference, ICONE 2012-POWER 2012
PB - American Society of Mechanical Engineers (ASME)
T2 - 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference, ICONE 2012-POWER 2012
Y2 - 30 July 2012 through 3 August 2012
ER -