TY - GEN
T1 - PRESSURE AND OSCILLATORY FLOWEFFECTS ON THE TWO-PHASE FLOW AND HEAT TRANSFER IN A ROD BUNDLE
AU - Garrett, Grant
AU - Beck, Faith
AU - Miller, Douglas
AU - Lowery, Brian
AU - Cheung, Fan Bill
AU - Bajorek, Stephen
AU - Hoxie, Chris
AU - Tien, Kirk
N1 - Funding Information:
The work performed at the Pennsylvania State University was supported by the U.S. Nuclear Regulatory Commission under Contract Number: NRC-HQ-60-16-T-0002.
Publisher Copyright:
© ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics.All rights reserved.
PY - 2020
Y1 - 2020
N2 - An experimental and numerical study was performed to investigate the effects of pressure and constant vs oscillatory flooding rates on the two-phase flow and heat transfer behavior of a rod bundle under reflood transient conditions. Experimental results were obtained from the NRC/PSU Rod Bundle Heat Transfer (RBHT) test facility from various test cases covering a range of system pressures with light water as the working coolant. For each pressure case, two experiments were performed, one for a constant flow rate, and one for an oscillating flow rate about the constant flow rate. The RBHT test facility, which contains 49 vertical, 3.66 m (12 ft) long test rods (four unheated corner rods and 45 heated rods) with Inconel 600 cladding in a 7x7 geometry, having the rod diameters, rod pitches and spacer grids comparable to those in commercial PWRs, was specifically designed to obtain fundamental flow and heat transfer data during reflood transients. The thermal-hydraulic code TRAC/RELAP Advanced Computational Engine (TRACE) was used in this study by performing simulations with the same geometry and operating conditions as the RBHT facility for each experiment. Results of the TRACE simulations were compared to the experimental data obtained in the RBHT tests. It was found that the trends on the pressure effects for constant and oscilatory flows on the thermal-hydraulic behavior of the rod bundle (i.e., the two-phase flow and heat transfer behavior of the rod bundle during reflood transients) predicted by the TRACE model agree well with the RBHT data.
AB - An experimental and numerical study was performed to investigate the effects of pressure and constant vs oscillatory flooding rates on the two-phase flow and heat transfer behavior of a rod bundle under reflood transient conditions. Experimental results were obtained from the NRC/PSU Rod Bundle Heat Transfer (RBHT) test facility from various test cases covering a range of system pressures with light water as the working coolant. For each pressure case, two experiments were performed, one for a constant flow rate, and one for an oscillating flow rate about the constant flow rate. The RBHT test facility, which contains 49 vertical, 3.66 m (12 ft) long test rods (four unheated corner rods and 45 heated rods) with Inconel 600 cladding in a 7x7 geometry, having the rod diameters, rod pitches and spacer grids comparable to those in commercial PWRs, was specifically designed to obtain fundamental flow and heat transfer data during reflood transients. The thermal-hydraulic code TRAC/RELAP Advanced Computational Engine (TRACE) was used in this study by performing simulations with the same geometry and operating conditions as the RBHT facility for each experiment. Results of the TRACE simulations were compared to the experimental data obtained in the RBHT tests. It was found that the trends on the pressure effects for constant and oscilatory flows on the thermal-hydraulic behavior of the rod bundle (i.e., the two-phase flow and heat transfer behavior of the rod bundle during reflood transients) predicted by the TRACE model agree well with the RBHT data.
UR - http://www.scopus.com/inward/record.url?scp=85141539350&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85141539350&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85141539350
T3 - ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics
SP - 194
EP - 207
BT - ATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics
PB - American Nuclear Society
T2 - 2020 International Topical Meeting on Advances in Thermal Hydraulics, ATH 2020
Y2 - 20 October 2020 through 23 October 2020
ER -