Theory, Capabilities, and Use of the Three-Dimensional Reactor Operation and Control Simulator (ROCS)

A three-dimensional coarse-mesh reactor simulator is described that provides a good balance between computational speed and numerical accuracy. The system and theoretical methods have been verified by comparison with such conventional fine-mesh diffusion theory methods as the PDQ reactor code. The accuracy of the computational method has been determined to be an improvement over alternative methods through extensive comparisons between measurement and calculation for up to three cycles of reactor operation.