US Labs Develop Griffin Reactor Simulation Platform
Scientists at Idaho National Laboratory and Argonne National Laboratory have developed Griffin, a reactor physics modeling and simulation software announced in 2025. The platform couples neutronics, thermal-hydraulics, structural mechanics and fuel performance to simulate reactor behavior across designs, winning a 2025 R&D 100 Award. Griffin aims to reduce costly prototypes, accelerate design cycles, and support microreactor and space reactor applications.
Key Points
- 1Introduces Griffin, a reactor physics simulation platform combining neutronics, thermal hydraulics, structural mechanics, and fuel performance
- 2Enables high-fidelity and fast lower-fidelity simulations, reducing need for physical prototypes and long test cycles
- 3Allows designers to evaluate pebble-bed, molten-salt, microreactor, and space reactor concepts more safely and efficiently
Scoring Rationale
High technical and practical impact from national-lab validated simulator, but relevance is primarily to nuclear engineering specialists.
Sources
Public references used for this report.
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