Use of SANA experimental data for validation and verification of MGT-3D and a CFD porous media model for VHTR application

This paper forces on the investigation of heat transfer including thermal conduction, thermal radiation and convection in atmospheric pressure in the pebble bed type reactor. SANA experiment is chosen to conduct the validation of the simulation results. Firstly, the SANA experimental facility is presented which provided measurement data for high temperature heat transfer in closed pebble beds. Secondly, the simulation model of MGT-3D and the CFD porous media model are introduced, which include the geometry, the materials and the boundary conditions. At last, this paper introduces the validation scheme including both code to code and code to experiment comparisons based on the Juelich experimental database. The steady state and transient cases are considered in the verification and validation. The results are analyzed and a conclusion will be given in the end of this paper.