Open-source contribution
DAGMC
Contributions to DAGMC, which lets particle transport codes read CAD geometry directly instead of a hand-converted tessellation.
- Role
- Open-source contributor
- Period
- 2023 — present
The problem
Coupling a CAD model to a transport code normally means exporting geometry in a neutral format and converting it, which loses information and adds a slow, brittle step to every modelling iteration.
The approach
DAGMC removes that conversion step by teaching transport codes to read CAD B-rep geometry directly. My contributions focused on the parts of that pipeline that users touch first: build integration and the tooling around the geometry representation.
The project sits at the boundary between two domains — CAD kernels and Monte Carlo physics — so the work is mostly about making two very different assumptions about geometry agree with each other.
Engineering highlights
Geometry without the conversion tax
Removing the CAD-to-neutral-format step eliminates a whole class of “the model looks right but the mesh does not” bugs.
Two domains, one interface
CAD kernels and transport codes disagree about tolerances, orientation and units by default. Agreeing on those explicitly is most of the work.
At a glance
- Project
- Direct Accelerated Geometry Monte Carlo
- Role
- Contributor
Stack
- C++
- MOAB
- OpenMC
- CMake