The University of Michigan Unstructured Mesh Code (UM² )

UM² is a library that aims to enable Method of Characteristics neutron transport calculations on unstructured polygon meshes and CAD models. The library provides a set of tools for automatic Coarse Mesh Finite Difference and Method of Characteristics mesh generation for CAD models, as well as tools for fast, robust ray tracing, geometric queries, and mesh analysis.

The library can be interfaced with MPACT to perform 2D/1D calculations on unstructured meshes.

UM² is developed by members of the Nuclear Reactor Analysis and Methods Group at the University of Michigan.

Contents

• Installation and Configuration
• Building MPACT with UM²
• Tutorial
• License Agreement