High Temperature Gas-cooled Reactor model shown below was created using RGG tools: AssyGen and CoreGen ( More info about these tools is here: What is RGG?)
Simulation details using this model can be found in this publication:
Bingham, Avery, Javier Ortensi, Rajeev Jain, Iulian Grindeanu, and Tim Tautges. “SHARP/PRONGHORN.” (2012). pdf
Left: Full Core HTGR mesh model; Center: Core model with 3 control rods, but without fuel blocks; Right: Fuel blocks
Only 6 input files with 20 lines are needed to generate this model. There are 76 different types of assemblies (based on material) and 331 total assemblies that form the this full core model.
The process is completely automatic and modifications to the mesh/geometry are easy once the process is setup using a makefile.
It takes 10 mins to create the assembly geometry and mesh from AssyGen input files. CoreGen takes less that one minutes to create the full core model.
This model contains 864 fuel blocks(right) and 876 blocks in total. The complexity and details can be added to the individual assemblies and mesh for other physics using the same setup.
AssyGen Input Files:
Other AssyGen input files:
CoreGen Input File: