Three-dimensional single-channel thermal analysis of fully ceramic microencapsulated fuel via two-temperature homogenized model.

Highlights: [•] Two-temperature homogenized model is applied to thermal analysis of fully ceramic microencapsulated (FCM) fuel. [•] Based on the results of Monte Carlo calculation, homogenized parameters are obtained. [•] 2-D FEM/1-D FDM hybrid method for the model is used to obtain 3-D temperature profiles. [•] The model provides the fuel-kernel and SiC matrix temperatures separately. [•] Compared to UO2 fuel, the FCM fuel shows ∼560K lower maximum temperatures at steady- and transient states. [Copyright &y& Elsevier]