Progress in reflood thermal hydraulics studies in the past 40 years

BW Yang, SM Bajorek, Y Jin, FB Cheung - Nuclear Engineering and Design, 2021 - Elsevier
Accurate simulation of reflood transients of a reactor core is one of the top priorities for
nuclear reactor thermal–hydraulic and safety analysis. An in-depth understanding of the two …

Parametric effects on the flow redistribution in ballooned bundles evaluated by magnetic resonance velocimetry

AVS Oliveira, D Stemmelen, S Leclerc, T Glantz… - … Thermal and Fluid …, 2021 - Elsevier
When the water inventory evaporates during a hypothetical loss of coolant accident in the
core of a pressurized water reactor, the fuel rods temperature increases substantially …

Investigation of the thermal-hydraulic non-equilibrium in a 7× 7 rod bundle during reflood

Y Jin, FB Cheung, SM Bajorek, K Tien… - International Journal of …, 2018 - Elsevier
The current research aims at investigating the thermal–hydraulic non-equilibrium
encountered in the dispersed flow film boiling (DFFB) regime under reflood conditions. A …

Numerical investigation of rod bundle thermal–hydraulic behavior during reflood transients using COBRA-TF

Y Jin, FB Cheung, K Shirvan, SM Bajorek, K Tien… - Annals of Nuclear …, 2020 - Elsevier
Accurate prediction of the reflood transients during LOCA has long been a challenging task.
One reason for this is the substantial cost incurred to perform large-scale reflood tests, which …

Experimental thermal hydraulics study of the blockage ratio effect during the cooling of a vertical tube with an internal steam-droplets flow

JDP Carrillo, AVS Oliveira, A Labergue, T Glantz… - International Journal of …, 2019 - Elsevier
Abstract During a Loss of Coolant Accident (LOCA) in a Pressurized Water Reactor, partial
or complete drying of fuel assemblies may take place. In these conditions, the fuel …

Forced reflood modeling in a 2× 2 rod bundle with a 90% partially blocked region

M Hashemi-Tilehnoee, S Tashakor, SM Seyyedi… - Annals of Nuclear …, 2019 - Elsevier
Reflooding is a complicated thermal-hydraulic process in a loss of coolant accident (LOCA)
related to the nuclear reactor safety issues. Due to the physical nature of multi-scale behind …

Rod bundle heat transfer thermal-hydraulic program

SM Bajorek, FB Cheung - Nuclear Technology, 2019 - Taylor & Francis
Abstract The US Nuclear Regulatory Commission has been conducting thermal-hydraulic
research using the Rod Bundle Heat Transfer (RBHT) facility at the Pennsylvania State …

Modeling of droplet diameter changes during reflood into RELAP5/Mod3. 3

JH Park, YH Jeong - Nuclear Engineering and Design, 2022 - Elsevier
Water droplets are generated in the reflood period of a large break loss-of-coolant accident
by either shattering of liquid ligament or interfacial shear force. As generated droplets …

Mechanistic modeling of the thermal-hydraulics in polydispersed flow film boiling in LOCA conditions

AVS Oliveira, JDP Carrillo, A Labergue, T Glantz… - … Engineering and Design, 2020 - Elsevier
Much effort has been devoted by the nuclear community to develop mechanistic models to
predict the heat dissipation of fuel rods during a loss of coolant accident (LOCA). However …

Data-driven modeling for drop size distributions

T Traverso, T Abadie, OK Matar, L Magri - Physical Review Fluids, 2023 - APS
The prediction of the drop size distribution (DSD) resulting from liquid atomization is key to
the optimization of multiphase flows from gas-turbine propulsion through agriculture to …