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DOE OSTI · 1907753

MCNP6.3 Unstructured Mesh Verification: GodivR and CANDU Models

Gonzalez, Esteban·Armstrong, Jerawan Chudoung·Tutt, James Robert
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Abstract

A geometric cell of the Monte Carlo N-Particle (MCNP)1 transport code is traditionally created by using Boolean operators on defined surfaces. This constructive solid geometry (CSG) capability has been available in the MCNP code since its beginning. However, a CSG model approach is limited when it comes to constructing a representative geometry for a complex model in its ability to capture a correct model representation. Starting with the version 6.0, the MCNP code has the ability of embedding an unstructured mesh (UM) model into a CSG cell to create a hybrid geometry [1]. The MCNP UM feature provides the flexibility of defining very complex geometries because computer aided design (CAD) and mesh generation software packages can be utilized to construct UM models for MCNP simulations.

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Gonzalez, Esteban, Armstrong, Jerawan Chudoung, Tutt, James Robert. 2022-12-21. MCNP6.3 Unstructured Mesh Verification: GodivR and CANDU Models. https://doi.org/10.2172/1907753

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