Molten Salt Reactor Experiment (MSRE) Multiphysics Model Results

Steady State Results

The multi-dimensional velocity field becomes approximately 1D due to the anisotropic friction coefficient blocking flow in the horizontal direction as seen in Figure 1 (center). Figure 1 (right) and Figure 1 (left) show the power source distribution calculated by Griffin and the resultant temperature field respectively. The simulation predicts a temperature increase of about 60 K (kelvin) in the core. The temperature variation predicted across the downcomer is small.

Figure 1: Fuel Salt Temperature - left (K), Fuel salt velocity - center (m/s), and Power density - right (W/m).

Additionally, the steady-state delayed neutron precursor group distributions calculated via Pronghorn are shown in Figure 2. Here the long lived delayed neutron precursor group 1 is well mixed throughout the reactor core, whereas the short lived neutron precursor group 6 is centralized and decays in the reactor core.

Figure 2: Long lived DNP Group 1 (left), Medium lived DNP group 3(center), and short lived DNP group 6 (right).

Execution

To apply for access to Griffin and HPC, please visit NCRC. To run the multiphysics model on:

module load use.moose moose-apps bluecrab

mpiexec -n 6 blue_crab-opt -i neu.i

mamba deactivate

mamba activate bluecrab

mpiexec -n 6 blue_crab-opt -i neu.i

mpiexec -n 6 ~/projects/bluecrab/blue_crab-opt -i neu.i