Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Improvements to the Griffin Transport Solvers

S&T Accomplishment Report ·
OSTI ID:1901806
 [1];  [1];  [1];  [1];  [2];  [2];  [2]
  1. Idaho National Laboratory
  2. Argonne National Laboratory
+ Show Author Affiliations
Griffin is a Multiphysics Object-Oriented Simulation Environment (MOOSE) based reactor multiphysics analysis application jointly developed by Idaho National Laboratory and Argonne National Laboratory. The code includes a variety of steady-state solvers for fixed-source, k-eigenvalue, adjoint, and subcritical multiplication, as well as transient solvers for point-kinetics, improved quasi-static, and spatial dynamics. This document summarizes the transport solver development efforts pursued during Fiscal Year 2022. We added the multiphysics transient capability for the coarse-mesh finite difference accelerated Richardson iteration for discontinuous finite element method discrete ordinates (DFEM-SN) scheme to support high-order heterogeneous transport simulations. HFEM (hybrid finite element method) - PN (spherical harmonics expansion) was completed and red-black iteration was added for solving the HFEM-PN system with both preconditioned Jacobian-free Newton Krylov and Richardson iteration solvers. The HFEM-PN scheme, as one of the low-order transport schemes, is expected for supporting routine design simulations. Pin power reconstruction capability was also designed and implemented with the Griffin ISOXML module to enhance all the low-order transport solvers for more accurate multiphysics simulations. Numerical results are presented for demonstrating the capabilities and verifying their performance, and future works are discussed.
Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
DOE Contract Number:
AC07-05ID14517
OSTI ID:
1901806
Report Number(s):
INL/RPT-22-69391-Rev000
Country of Publication:
United States
Language:
English

Similar Records

Performance Improvements for the Griffin Transport Solvers
Technical Report · Wed Sep 01 00:00:00 EDT 2021 · OSTI ID:1822446
Improved Fast Reactor Capability of Griffin in FY23
Technical Report · Sat Sep 30 00:00:00 EDT 2023 · OSTI ID:2352756
Implementation of hybrid finite element method based transport solver in GRIFFIN
Conference · Fri Jul 01 00:00:00 EDT 2022 · OSTI ID:23178687

Related Subjects

97 MATHEMATICS AND COMPUTING
Griffin
MOOSE
radiation transport