Transient fuel performance analysis of UO2-BeO fuel with composite SiC coated with Cr cladding based on multiphysics method

We used CAMPUS to evaluate the accident-tolerant fuel performance under accident conditions. The CAMPUS is a fuel-performance code developed based on COMSOL, and the transient multiphysics models were updated in it. The experimental parameters funded by the NRC are listed in the attachment named input-MT. The LOCA condition was simulated primarily by setting the boundary condition of the heat transfer coefficient on the cladding outer surface. A simplified coolant model was adopted to calculate the heat-transfer coefficient of the cladding outer surface under LOCA conditions. The results of the fuel-performance are listed in the attachments named from fig2 to fig16.