Abstract
Acceleration techniques are essential for the efficient iterative solution of the transport equation in reactor applications. We present two new acceleration techniques for the method of characteristics in unstructured meshes. The DP N scheme generalizes a previous asymptotic acceleration by incorporating a general DP N angular approximation for intercell angular fluxes. In a radically different approach we show how to construct a scalar product such that the transport operator becomes symmetric, and apply Lanczos' iterations. Both, the DP N and Lanczos' accelerations, are able to accelerate higher angular flux moments. Numerical tests for realistic assembly geometries are used to compare the efficiency of the acceleration methods.
Sign-in/Register to access full text options 
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.
