Numerical Calculation Scheme of Neutronics-Thermal-Mechanical Coupling in Solid State Reactor Core Based on Galerkin Finite Element Method

It is of practical significance to study the multi-physical processes solid state nuclear systems for device design, safety analysis, and operation guidance. This system generally includes three processes: neutronics, heat transfer, thermoelasticity. In order analyze field behavior system, it necessary laws neutron flux, temperature, stress, other physical fields in system. Aiming at this scientific goal, paper has carried out aspects work: (1) Based on Galerkin’s finite element theory, governing equations thermoelasticity have been established; (2) a neutronics-thermal-mechanical analysis code was developed verified based benchmark examples third-party software processes; (3) with typical pipe cooled reactor configuration, work, coupling out, such as etc., under steady-state operating conditions were obtained; (4) finally, calculation results are discussed analyzed, focus direction next work clarified.