SBIR-STTR Award

The design and development of next generation nuclear reactors will require accurate and efficient reactor physics simulation tools. More accurate simulation methods can both shorten product development time and lead to the development of reactor designs with improved efficiency, safety, and reliability. Conventional analysis tools employ approximations which limit their accuracy and effectiveness. This project will develop an intuitive, fast, and accurate reactor physics simulation tool that is compatible with established computer aided design (CAD) and computer aided engineering (CAE) practices. It is based on the application of a novel, deterministic solver that has been shown to provide a favorable combination of accuracy and speed for a broad range of simulations. Phase I will develop and verify a proof-of-concept reactor modeling process. Both steady-state and time-dependent simulations will be evaluated by comparison with tests conducted in an actual reactor.

Commercial Applications and Other Benefits as described by the awardee:
By reducing design uncertainties, the new simulation tool should improve the efficiency and performance of reactor development activities, leading to increased reactor safety and efficiency. The technology should be applicable to a broad range of reactor types, including commercial power, research, isotope production, and naval and space propulsion

A compelling need exists for the development of accurate and efficient reactor physics simulation tools in the analysis of currently operational nuclear reactors, and in the design of next generation reactor concepts. More accurate simulation methods can improve safety and reliability, shorten the development cycle of next generation reactors, and lead to the design of reactors with improved efficiency, safety, and reliability. This project will develop an intuitive, fast, and accurate reactor physics simulation tool that is compatible with established computer aided design (CAD) and computer aided engineering (CAE) practices. It is based on the application of a novel deterministic solver, which has been shown to provide a favorable combination of accuracy and speed for a broad range of simulations. Phase I involved the development and verification of a proof-of-concept reactor modeling process. Both steady-state and time-dependent simulations were run, and the results were compared to experimental data. The accuracy and efficiency of the solutions verified the feasibility of the approach. Phase II will focus on the development and testing of enhancements that can improve efficiency, accuracy and ease-of-use for the analysis of both commercial and research/test reactors. In particular, solver and model generation enhancements will be incorporated, a graphical user interface will be developed, cross section and thermal-hydraulics integration will be provided, and source generation routines will be developed.

Commercial Applications and Other Benefits as described by the awardee:
By reducing uncertainties associated with design and operation, the new simulation tool should help improve the safety and efficiency of a broad range of reactor types, including reactors for commercial power, research, isotope production, and naval and space propulsion.