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Title: Initial Testing of the Microscopic Depletion Implementation in the MAMMOTH Reactor Physics Application

Abstract

Present and new nuclear fuels that will be tested at the Transient Reactor Test (TREAT) facility will be analyzed with the MAMMOTH reactor physics application, currently under development, at Idaho National Laboratory. MAMMOTH natively couples the BISON, RELAP-7, and Rattlesnake applications within the MOOSE framework. This system allows the irradiation of fuel from beginning of life in a nuclear reactor until it is placed in TREAT for fuel testing within the same analysis mesh and, thus, retaining a very high level of resolution and fidelity. The calculation of the isotopic distribution in fuel requires the solution to the decay and transmutation equations coupled to the neutron transport equation. The Chebyshev Rational Approximation Method (CRAM) is the current state-of-the-art in the field, as was chosen to be the solver for the decay and transmutation equations. This report shows that the implementation of the CRAM solver within MAMMOTH is correct with various analytic benchmarks for decay and transmutation of nuclides. The results indicate that the solutions with CRAM order 16 achieve the level of precision of the benchmark. The CRAM solutions show little sensitivity to the time step size and consistently produce a high level of accuracy for isotopic decay for timemore » steps of 1x10^11 years. Comparisons to DRAGON5 with 297 isotopes yield comparable results, but some differences need to be further analyzed.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1389198
Report Number(s):
INL/EXT-16-39930
TRN: US1800513
DOE Contract Number:  
AC07-05ID14517
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 22 GENERAL STUDIES OF NUCLEAR REACTORS; NUCLEAR FUELS; REACTOR PHYSICS; NEUTRON TRANSPORT; bateman; burnup; CRAM; depletion; microdepletion

Citation Formats

Ortensi, J., Wang, Y., Schunert, S., Ganapol, B. D., Gleicher, F. N., Baker, B., and DeHart, M. D. Initial Testing of the Microscopic Depletion Implementation in the MAMMOTH Reactor Physics Application. United States: N. p., 2016. Web. doi:10.2172/1389198.
Ortensi, J., Wang, Y., Schunert, S., Ganapol, B. D., Gleicher, F. N., Baker, B., & DeHart, M. D. Initial Testing of the Microscopic Depletion Implementation in the MAMMOTH Reactor Physics Application. United States. doi:10.2172/1389198.
Ortensi, J., Wang, Y., Schunert, S., Ganapol, B. D., Gleicher, F. N., Baker, B., and DeHart, M. D. Thu . "Initial Testing of the Microscopic Depletion Implementation in the MAMMOTH Reactor Physics Application". United States. doi:10.2172/1389198. https://www.osti.gov/servlets/purl/1389198.
@article{osti_1389198,
title = {Initial Testing of the Microscopic Depletion Implementation in the MAMMOTH Reactor Physics Application},
author = {Ortensi, J. and Wang, Y. and Schunert, S. and Ganapol, B. D. and Gleicher, F. N. and Baker, B. and DeHart, M. D.},
abstractNote = {Present and new nuclear fuels that will be tested at the Transient Reactor Test (TREAT) facility will be analyzed with the MAMMOTH reactor physics application, currently under development, at Idaho National Laboratory. MAMMOTH natively couples the BISON, RELAP-7, and Rattlesnake applications within the MOOSE framework. This system allows the irradiation of fuel from beginning of life in a nuclear reactor until it is placed in TREAT for fuel testing within the same analysis mesh and, thus, retaining a very high level of resolution and fidelity. The calculation of the isotopic distribution in fuel requires the solution to the decay and transmutation equations coupled to the neutron transport equation. The Chebyshev Rational Approximation Method (CRAM) is the current state-of-the-art in the field, as was chosen to be the solver for the decay and transmutation equations. This report shows that the implementation of the CRAM solver within MAMMOTH is correct with various analytic benchmarks for decay and transmutation of nuclides. The results indicate that the solutions with CRAM order 16 achieve the level of precision of the benchmark. The CRAM solutions show little sensitivity to the time step size and consistently produce a high level of accuracy for isotopic decay for time steps of 1x10^11 years. Comparisons to DRAGON5 with 297 isotopes yield comparable results, but some differences need to be further analyzed.},
doi = {10.2172/1389198},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {9}
}

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