FY20 Verification of BISON Using Analytic and Manufactured Solutions

Toptan, Aysenur; Porter, Nathan; Hales, Jason D.; Williamson, Richard L.; Pilch, M.

doi:10.2172/1614683

Cited by 7 publications

(24 citation statements)

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“…After we select the method to obtain a reference solution, the theoretical convergence rate of the numerical algorithm is established. More discussion can be found in [44] on how to derive the formal order of accuracy for the finite element method (FEM).…”

Section: Methodsmentioning

confidence: 99%

“…log ||q|| − log h I II III Figure 3.1: A pictorial representation of expected convergence behavior [44] that is characterized by three regions in practical applications [46]: Region I represents coarse meshes, region II is the asymptotic region, and region III is caused by numerical error. The desirable region for the numerical solutions is the asymptotic region.…”

Section: Methodsmentioning

confidence: 99%

“…Verification is a process to ensure that the code functions correctly and is reliable. BISON has undergone rigorous verification and validation activities [41,42,43,44]. Here we provide a verification problem to assess finite-element solutions of BISON, and correspondingly, MOOSE.…”

Section: Verificationmentioning

confidence: 99%

“…Here we provide a verification problem to assess finite-element solutions of BISON, and correspondingly, MOOSE. Detailed information on the verification methodology can be found in [44] including an extensive set of verification problems, which is briefly outlined in Section 3.1. The selected verification problem is provided in Section 3.2.…”

Section: Verificationmentioning

confidence: 99%

“…This verification problem is a modification of the problem given in [44,Problem 3.7] and [47, p.194]. The thermal conductivity of a solid body varies linearly with temperature: k = k 0 (1 + βT ), where β > 0, and k 0 is an arbitrary constant.…”

Section: Exact Solution To the Mathematical Problemmentioning

confidence: 99%

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BISON Capabilities for LWR Fuel Behavior Analysis During Accident and High-burnup Conditions

Toptan

Pastore

Gamble

2020

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The U.S. Department of Energy (DOE)'s Nuclear Energy Advanced Modeling and Simulation (NEAMS) program aims to develop predictive capabilities using computational methods for the analysis and design of advanced reactor and fuel cycle systems. This program has been supporting the development of BISON, a high-fidelity and high-resolution fuel performance tool at the engineering scale. Recent increasing interest in applications at extended burnups motivated this study to incorporate more physically based models in BISON. This document details integration of newly implemented modeling capabilities for BISON. These include: (1) new thermal conductivity models that are valid up to 100 GWd/t, (2) models for the formation of the high-burnup structure (HBS), (3) two porosity correction methods applied to the thermal conductivity due to the conducting pores during the HBS formation. BISON's results are verified and validated to test the new modeling capabilities.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Verificationmentioning

confidence: 99%

Section: Verificationmentioning

confidence: 99%

Section: Exact Solution To the Mathematical Problemmentioning

confidence: 99%

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BISON Capabilities for LWR Fuel Behavior Analysis During Accident and High-burnup Conditions

Toptan

Pastore

Gamble

2020

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BISON: A Flexible Code for Advanced Simulation of the Performance of Multiple Nuclear Fuel Forms

et al. 2021

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BISON is a nuclear fuel performance application built using the Multiphysics Object-Oriented Simulation Environment (MOOSE) finite element library. One of its major goals is to have a great amount of flexibility in how it is used, including in the types of fuel it can analyze, the geometry of the fuel being modeled, the modeling approach employed, and the dimensionality and size of the models. Fuel forms that can be modeled include standard light water reactor fuel, emerging light water reactor fuels, tri-structural isotropic fuel particles, and metallic fuels. BISON is a platform for research in nuclear fuel performance modeling while simultaneously serving as a tool for the analysis of nuclear fuel designs. Recent research in BISON includes techniques such as the extended finite element method for fuel cracking, exploration of high-burnup light water reactor fuel behavior, swelling behavior of metallic fuels, and central void formation in mixed-oxide fuel. BISON includes integrated documentation for each of its capabilities, follows rigorous software quality assurance procedures, and has a growing set of rigorous verification and validation tests.

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BISON BWR Fuel Modeling Capability: Material Models (FY2020)

Toptan

Gamble

2020

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Until this year, the BISON fuel performance code has been developed primarily for pressurized water reactor (PWR), accident tolerant fuel (ATF), and advanced reactor (e.g., tri-structural isotropic (TRISO), metallic) analyses. The main focus of this work is to develop and document required material models that would aid predicting cladding failure with a specific hydride distribution to be investigated for boiling water reactor (BWR) applications in the next fiscal year. In terms of materials, the primary differences between a BWR and PWR is the use of gadolinia doping of the UO 2 fuel, the use of Zircaloy-2 for the cladding, and the addition of a liner on the inner surface of the cladding for improved pellet-clad mechanical interaction (PCMI) performance. The liner is typically made of pure zirconium or a lower tin content zirconium alloy (e.g. Zr-0.3%Sn). This work details the development and documentation of material and behavioral models for BWR analysis such as the addition of material and behavior models for gadolinia doped UO 2 , pure zirconium, Zr-0.3%Sn, and Zircaloy-2 as well as the ease-of-use additions to allow internal meshing capabilities to include liners. Another important aspect affecting cladding performance is hydrogen diffusion and hydride precipitation in the cladding. A model was added previously for non-lined, homogeneous claddings. In this work, instructions are provided on how to apply the model the BWR liner cladding. Representative experimental values are provided for the hydrogen diffusion parameters and precipitation-dissolution kinetics for typical liner materials of interest.

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FY20 Verification of BISON Using Analytic and Manufactured Solutions

Cited by 7 publications

References 0 publications

BISON Capabilities for LWR Fuel Behavior Analysis During Accident and High-burnup Conditions

BISON Capabilities for LWR Fuel Behavior Analysis During Accident and High-burnup Conditions

BISON: A Flexible Code for Advanced Simulation of the Performance of Multiple Nuclear Fuel Forms

BISON BWR Fuel Modeling Capability: Material Models (FY2020)

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