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DOE OSTI · 2432540

Neutronics Enhanced Meshing Operations (NEMO) Users Manual V.1.0

Ortensi, Javier·Laboure, Vincent M.·Schunert, Sebastian·Stewart, Ryan H.
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Abstract

The is a Python framework developed at Idaho National Laboratory that uses the Cubit Python to build Cubit models and export them in EXODUS II format. These EXODUS mesh files can be used by any -based application, but NEMO is specialized for coupled neutronics calculations. Therefore, the primary purpose of NEMO is to prepare mesh files for reactor geometries and generate a homogenization overlay file for the Serpent Monte Carlo code. This homogenization overlay file ensures the consistency of the mesh with the generation of homogenized cross sections and reference fluxes for the Superhomogenization method. NEMO also supports the preparation of mesh files for thermal and thermo-mechanical models, particularly the discontinuous finite element gap heat transfer model in Griffin. This manual introduces the user to the basic capabilities in NEMO for prismatic geometries.

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22 GENERAL STUDIES OF NUCLEAR REACTORS97 MATHEMATICS AND COMPUTINGCubitelementfiniteGriffinmeshMOOSE

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Ortensi, Javier, Laboure, Vincent M., Schunert, Sebastian, Stewart, Ryan H.. 2020-11-01. Neutronics Enhanced Meshing Operations (NEMO) Users Manual V.1.0. https://doi.org/10.2172/2432540

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