TY - GEN
T1 - CFD analyses of natural circulation in the air-cooled reactor cavity cooling system
AU - Hu, Rui
AU - Pointer, W. David
PY - 2013
Y1 - 2013
N2 - The Natural Convection Shutdown Heat Removal Test Facility (NSTF) is currently being built at Argonne National Laboratory, to evaluate the feasibility of the passive Reactor Cavity Cooling System (RCCS) for Next Generation Nuclear Plant (NGNP). CFD simulations have been applied to evaluate the NSTF and NGNP RCCS designs. However, previous simulations found that convergence was very difficult to achieve in simulating the complex natural circulation. To resolve the convergence issue and increase the confidence of the CFD simulation results, additional CFD simulations were conducted using a more detailed mesh and a different solution scheme. It is found that, with the use of coupled flow and coupled energy models, the convergence can be greatly improved. Furthermore, the effects of convection in the cavity and the effects of the uncertainty in solid surface emissivity are also investigated.
AB - The Natural Convection Shutdown Heat Removal Test Facility (NSTF) is currently being built at Argonne National Laboratory, to evaluate the feasibility of the passive Reactor Cavity Cooling System (RCCS) for Next Generation Nuclear Plant (NGNP). CFD simulations have been applied to evaluate the NSTF and NGNP RCCS designs. However, previous simulations found that convergence was very difficult to achieve in simulating the complex natural circulation. To resolve the convergence issue and increase the confidence of the CFD simulation results, additional CFD simulations were conducted using a more detailed mesh and a different solution scheme. It is found that, with the use of coupled flow and coupled energy models, the convergence can be greatly improved. Furthermore, the effects of convection in the cavity and the effects of the uncertainty in solid surface emissivity are also investigated.
KW - CFD
KW - Natural circulation
KW - Passive safety system
UR - http://www.scopus.com/inward/record.url?scp=84883355837&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84883355837
SN - 9781627486439
T3 - International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2013
SP - 2158
EP - 2169
BT - International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2013
T2 - International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2013
Y2 - 5 May 2013 through 9 May 2013
ER -