The Very High Temperature Gas-Cooled Reactor (VHTR) is one of the six Gen IV reactor designs, which will generate electricity and high temperature heat for industrial applications. The design of the VHTR includes a new passive safety system that is designed to remove heat and maintain temperatures … [Read more...]
Archives for October 2017
Pebble Bed Test Facility
The Advanced High-Temperature Reactor (AHTR) concept leverages a particle-based fuel format consisting of discrete spherical graphite pebbles arrayed in a packed bed architecture. Thermal regulation achieved via flow of gas (e.g., helium) or liquid (e.g., molten salt) coolants through the void … [Read more...]
Pressurized Thermal Shock (PTS) Facility: “The Cold Leg Mixing CFD-UQ benchmark”
The 5th benchmark of CFD applications to Nuclear reactor safety has been approved by CSNI. Its main objective is to go a step further in the application of single-phase CFD to nuclear safety issues with mixing problems possibly in presence of buoyancy effects. The Pressurized Thermal Shock (PTS) … [Read more...]
The Generic Safety Issue 191
Our research team, in collaboration with the South Texas Project Nuclear Operating Company (STPNOC), has solved the Generic Safety Issue (GSI) - 191, a problem resulting from a loss of coolant accident in a nuclear reactor, which can cause debris to be generated and potentially impact the … [Read more...]
Experimental Studies of PWR 5×5 Fuel Bundles
Fuel assemblies of pressurized water reactors (PWRs) are constructed from fuel rods and supports to create rod bundles. To support and maintain the lateral spatial gaps of the rods, support grids are positioned at regular intervals in the direction of axial flow. With the presence of the spacer … [Read more...]
The V&V Benchmark Problem: Twin Jet Experimental Facility
In early 2016, the ASME Verification and Validation in Computational Nuclear System Thermal Fluids Behavior Committee (ASME V&V30 Standard Committee) has selected the high-fidelity experimental data obtained in the Twin Jets experimental facility as the first V&V benchmark problem. The … [Read more...]
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