Abstract
In this paper, the hybrid stochastic deterministic coarse mesh radiation transport method COMET is extended to 2D cylindrical geometry for whole-core neutronics calculations. To facilitate the extension new functions in cylindrical geometry were developed for expanding the incident angular flux on the (r, Θ) surfaces. The new COMET method is tested in a set of simplified pebble bed reactor cores in 2D (r, Θ) geometry, consisting of an inner reflector, an annular fuel region, a controlled outer reflector. The comparisons indicate that COMET achieves an accuracy close to the Monte Carlo method (MCNP), with computational efficiency for core calculations that is at least 3 orders of magnitude faster than that of MCNP when a precomputed response library with a 4th order expansion in space and a 2nd order expansion in the polar and azimuthal angles is used.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
