Iterative Transport-Diffusion Methodology For LWR Core Analysis

¹ The Pennsylvania State University, University Park, PA, USA
² Westinghouse Electric Company LLC, Cranberry Township, PA, USA

^* Corresponding Author, E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract

This paper presents an update on the development of an advanced methodology for core calculations that uses local heterogeneous solutions for on-the-fly nodal cross-section generation. The Iterative Transport-Diffusion Method is an embedded transport approach that is expected to provide results with near 3D transport accuracy for a fraction of the time required by a full 3D transport method. In this methodology, the infinite environment used for homogenized nodal cross-section generation is replaced with a simulated 3D environment of the diffusion calculation. This update focuses on burnup methodology, axial leakage and 3D modeling.