Thomas J. Downar

发表

The Computational Science and Engineering (CS&E) Program at Purdue University

Thomas J. Downar, Tomasz Kozlowski, 2004, International Conference on Computational Science.

High-Fidelity Light Water Reactor Analysis with the Numerical Nuclear Reactor

Thomas J. Downar, Chang Hyo Kim, Han Gyu Joo, 2007 .

Light Water Reactor Fuel Cycle Optimization: Theory Versus Practice

Thomas J. Downar, Alexander Sesonske, T. Downar, 1988 .

Vera core simulator methodology for PWR cycle depletion

William A. Wieselquist, Thomas J. Downar, Brendan Kochunas, 2015 .

Methodology for coupling computational fluid dynamics and integral transport neutronics.

Thomas J. Downar, Tanju Sofu, Zhaopeng Zhong, 2004 .

Parallelization in SCALE continuous-energy resonance module GEMINEWTRN and transport module NEWT

Thomas J. Downar, Zhaopeng Zhong, Mark L Williams, 2006 .

Analysis of the OCECD/NEA PBMR-268 transient benchmark problem with the parcs neutronics code

Thomas J. Downar, Volkan Seker, 2005 .

Ranking of Input Parameters Importance for BWR Stability Based on Ringhals-1

Thomas J. Downar, Tomasz Kozlowski, Ivan Gajev, 2011 .

Parallelization of the SCALE continuous-energy resonance processing module GEMINEWTRN

Thomas J. Downar, Zhaopeng Zhong, Mark L Williams, 2006 .

Coupled full core neutron transport/cfd simulations of pressurized water reactors

Thomas J. Downar, Emilio Baglietto, Brendan Kochunas, 2012 .

Sensitivity and Uncertainty of the Neutronic Parameters of BWR Ringhals-1 TRACE/PARCS Stability Prediction

Thomas J. Downar, Tomasz Kozlowski, Ivan Gajev, 2010 .

Analysis of Control Rod Ejection Accident in MOX and MOX/UOX Cores with Time-Dependent Multigroup Pin-by-Pin SP3 Methods

Thomas J. Downar, Tomasz Kozlowski, Chang-Ho Lee, 2002 .

Optimal parameter updating for optical diffusion imaging

Thomas J. Downar, Jong Chul Ye, Rick P. Millane, 1998, Proceedings 1998 International Conference on Image Processing. ICIP98 (Cat. No.98CB36269).

Letter to the Editor on the paper by W. Wulff, “Critical review of conservation equations for two-phase flow in the U.S. NRC TRACE Code”

Thomas J. Downar, John H. Mahaffy, Stephen M. Bajorek, 2011 .

Coupled 3D reactor kinetics and thermal-hydraulic code development activities at the U.S. Nuclear Regulatory Commission

Thomas J. Downar, Han Gyu Joo, V. A. Mousseau, 1999 .

REACTOR PHYSICS SIMULATIONS WITH COUPLED MONTE CARLO CALCULATION AND COMPUTATIONAL FLUID DYNAMICS

Thomas J. Downar, Volkan Seker, J. W. Thomas, 2007 .

Weighted cost-function reconstruction in optical diffusion imaging

Thomas J. Downar, Jong Chul Ye, Rick P. Millane, 1997, Optics & Photonics.

A RELAP/NESTLE ENGINEERING SIMULATOR FOR SHARED-MEMORY MULTIPROCESSORS

Thomas J. Downar, Han Gyu Joo, J. Stephen Judd, 1997 .

Thoria-Based Cermet Nuclear Fuel: Neutronics Fuel Design and Fuel Cycle Analysis

Thomas J. Downar, Shripad T. Revankar, Sean M. McDeavitt, 2002 .

The Application of POSIX Threads and OpenMP to the U.S. NRC Neutron Kinetics Code PARCS

Thomas J. Downar, D. J. Lee, T. Downar, 2001, WOMPAT.

Developing and coupling of steady state two-phase thermal-hydraulic solver PATHS for PARCS

Thomas J. Downar, Benjamin Collins, Kan Wang, 2013 .

Issues and Approaches in Parallel Multi-Component and Multi-Physics Simulations

Thomas J. Downar, Rudolf Eigenmann, José A. B. Fortes, 1999, PDPTA.

Application of a generalized interface module to the coupling of PARCS with both RELAP5 and TRAC-M

Thomas J. Downar, Han Gyu Joo, V. A. Mousseau, 1999 .

Assembly Based Modular Ray Tracing and CMFD Acceleration for BWR Cores with Different Fuel Lattices

Thomas J. Downar, Han Gyu Joo, Yunlin Xu, 2006 .

Fuel Cycle Depletion Capability for the U.S. NRC Neutronics Code PARCS

Thomas J. Downar, W. Lafayette, Yunlin Xu, 2001 .

VERA Benchmarking Results for Watts Bar Nuclear Plant Unit 1 Cycles 1-12

William A. Wieselquist, Thomas J. Downar, Jeffrey J. Powers, 2016 .

Equilibrium cycle pin by pin transport depletion calculations with DeCART

Thomas J. Downar, Brendan Kochunas, Temitope A. Taiwo, 2012 .

The Numerical Nuclear Reactor for High Fidelity Integrated Simulation of Neutronic, Thermal-Hydraulic and Thermo Mechanical Phenomena - Project Overview

Thomas J. Downar, Chang Hyo Kim, Han Gyu Joo, 2004 .

REACTOR SIMULATION WITH COUPLED MONTE CARLO AND COMPUTATIONAL FLUID DYNAMICS.

Thomas J. Downar, Volkan Seker, J. W. Thomas, 2007 .

The Application of Neural Networks to Electric Power Grid Simulation

Thomas J. Downar, Lefteri H. Tsoukalas, Rong Gao, 2006, ICANN.

The analysis of the OECD/NEA/NSC PBMR-400 benchmark problem using PARCS-DIREKT

Thomas J. Downar, Volkan Seker, T. Downar, 2006 .

COUPLING THE CORE ANALYSIS PROGRAM DeCART TO THE FUEL PERFORMANCE APPLICATION BISON

Thomas J. Downar, Benjamin W. Spencer, Benjamin Collins, 2013 .

Parallel Applications of a Schwarz Preconditioned Krylov Solver for Nuclear Power Plant Simulation

Thomas J. Downar, John Steill, Jen-Ying Wu, 1997, PPSC.

A generalized interface module for the coupling of spatial kinetics and thermal-hydraulics codes

Thomas J. Downar, Han Gyu Joo, V. A. Mousseau, 1999 .

Reverse depletion method for PWR core reload design

Thomas J. Downar, Y. J. Kim, 1985 .

Improved parallelization of the modular ray tracing in the method of characteristics code decart

Thomas J. Downar, J. W. Thomas, B. Kochunas, 2007 .

A Nested FGMRES Method for Parallel Calculation of Nuclear Reactor Transients

Thomas J. Downar, Raghunandan Janardhan, 1998, J. Sci. Comput..

Proposed chemical plant initiated accident scenarios in a sulphur-iodine cycle plant coupled to a pebble bed modular reactor

Thomas J. Downar, Nicholas R. Brown, Shripad T. Revankar, 2010 .

Mapping Conjugate Gradient Algorithms for Neutron Diffusion Applications onto SIMD, MIMD, and Mixed-Mode Machines

Thomas J. Downar, Howard Jay Siegel, John John E. So, 2004, International Journal of Parallel Programming.

Methods and Model Development for Coupled RELAP5/PARCS Analysis of the Atucha-II Nuclear Power Plant

Thomas J. Downar, Andrew M. Ward, Yunlin Xu, 2011 .

The use of an Artificial Neural Network for on-line prediction of Pin-Cell Discontinuity Factors in PARCS

Thomas J. Downar, Tomasz Kozlowski, Deokjung Lee, 2004 .

DDDAS for Autonomic Interconnected Systems: The National Energy Infrastructure

Thomas J. Downar, Lefteri H. Tsoukalas, Dionysios Aliprantis, 2007, International Conference on Computational Science.

Method of characteristics direction probabilities and its accuracy and performance models

Thomas J. Downar, Brendan Kochunas, Benjamin Collins, 2014 .

Mapping the preconditioned conjugate gradient algorithm for neutron diffusion applications onto parallel machines

Thomas J. Downar, Howard Jay Siegel, John John E. So, 1996, Proceedings of the 1996 ICPP Workshop on Challenges for Parallel Processing.

COUPLED BWR CALCULATIONS with the NUMERICAL NUCLEAR REACTOR SOFTWARE SYSTEM

Thomas J. Downar, Tanju Sofu, D. P. Weber, 2007 .

EFFICIENT MULTIPHYSICS ITERATIONS IN MPACT WITH PARTIALLY CONVERGENT CMFD

Thomas J. Downar, Brendan Kochunas, Qicang Shen, 2021, EPJ Web of Conferences.

IMPROVED ANISOTROPIC LINEAR SOURCE FORMULATION FOR MULTIPHYSICS PROBLEMS

Thomas J. Downar, Brendan Kochunas, Andrew Fitzgerald, 2021, EPJ Web of Conferences.

CASL multiphysics modeling of crud deposition in PWRS

Thomas J. Downar, Daniel J. Walter, Annalisa Manera, 2013 .

Implementation of Two-Level Coarse-Mesh Finite Difference Acceleration in an Arbitrary Geometry, Two-Dimensional Discrete Ordinates Transport Method

Thomas J. Downar, Kevin T. Clarno, Zhaopeng Zhong, 2008 .

The application of the PARCS neutronics code to the atucha-I and atucha-II npps

Thomas J. Downar, Yunlin Xu, Marcelo Madariaga, 2008 .

Uncertainty in the burnup reactivity swing of liquid-metal fast reactors

Thomas J. Downar, T. Downar, H. Khalil, 1991 .

Explicit burnable absorber modeling for pressurized water reactor core reload design applications

Thomas J. Downar, J. A. Stillman, 1986 .

Importance of the ∇D term in frequency-resolved optical diffusion imaging

Thomas J. Downar, Jong Chul Ye, Rick P. Millane, 1998 .

An Incomplete Domain Decomposition Preconditioning Method for Nonlinear Nodal Kinetics Calculations

Thomas J. Downar, Han Gyu Joo, T. Downar, 1996 .

Continuous-Energy Multidimensional SN Transport for Problem-Dependent Resonance Self-Shielding Calculations

Thomas J. Downar, Zhaopeng Zhong, Mark D. DeHart, 2005 .

Stabilization techniques for the nonlinear analytic nodal method

Thomas J. Downar, Han Gyu Joo, Guobing Jiang, 1998 .

A Liquid-Metal Reactor for Burning Minor Actinides of Spent Light Water Reactor Fuel—II: Nuclear Data Uncertainty Analysis

Thomas J. Downar, Hangbok Choi, T. Downar, 1999 .

A Reverse Depletion Method for Pressurized Water Reactor Core Reload Design

Thomas J. Downar, Young Jin Kim, 1986 .

Development and Analysis of TREAT Neutronics Benchmarks

Thomas J. Downar, Volkan Seker, Haining Zhou, 2020 .

Accelerated fuel depreciation as an economic incentive for low-leakage fuel management

Thomas J. Downar, 1986 .

A Multilevel Quasi-Static Kinetics Method for Pin-Resolved Transport Transient Reactor Analysis

Thomas J. Downar, Ang Zhu, Yunlin Xu, 2016 .

A Generalized Adjoint Approach for Quantifying Reflector Assembly Discontinuity Factor Uncertainties

Thomas J. Downar, Benjamin Collins, Matthew Anderson Jessee, 2012 .

The Subray Method of Characteristics

Thomas J. Downar, Aaron M. Graham, Benjamin S. Collins, 2019, Nuclear Science and Engineering.

High fidelity LWR analysis with the numerical nuclear reactor.

Thomas J. Downar, Han Gyu Joo, Tanju Sofu, 2007 .

Coupled calculations using the numerical nuclear reactor for integrated simulation of neutronic and thermal-hydraulic phenomena.

Thomas J. Downar, Han Gyu Joo, Tanju Sofu, 2004 .

Physics analysis of coolant voiding in the ACR-700 lattice

Thomas J. Downar, Tomasz Kozlowski, Deokjung Lee, 2005 .

Depletion perturbation theory for the constrained equilibrium cycle

Thomas J. Downar, Won Sik Yang, T. Downar, 1989 .

The method of modular characteristic direction probabilities in MPACT

Thomas J. Downar, Brendan Kochunas, Benjamin Collins, 2013 .

OPTIMIZATION OF CORE RELOAD DESIGN FOR LOW-LEAKAGE FUEL MANAGEMENT IN PRESSURIZED WATER REACTORS

Thomas J. Downar, Alexander Sesonske, T. Downar, 1987 .

Modeling of the fast boron injection system for CNA-II

Thomas J. Downar, Yunlin Xu, Timothy J. Drzewiecki, 2008 .

Analysis of the OECD/NRC BWR Turbine Trip Transient Benchmark with the Coupled Thermal-Hydraulics and Neutronics Code TRAC-M/PARCS

Thomas J. Downar, Deokjung Lee, Bedirhan Akdeniz, 2004 .

Application of TRACE/PARCS to BWR stability analysis

Thomas J. Downar, Kostadin Ivanov, Joseph Staudenmeier, 2008 .

MULTIGROUP TRANSIENT CALCULATION WITHIN THE FRAMEWORK OF A TWO-GROUP HEXAGONAL CMFD FORMULATION

Thomas J. Downar, W. Lafayette, Han Gyu Joo, 2001 .

Surrogate-based multi-experiment calibration of the BISON fission gas behavior model

Thomas J. Downar, Tat Nghia Nguyen, T. Downar, 2017 .

Modified distorted Born iterative method with an approximate Fréchet derivative for optical diffusion tomography

Thomas J. Downar, Jong Chul Ye, Rick P. Millane, 1999 .

Convergence Analysis of the Nonlinear Coarse-Mesh Finite Difference Method for One-Dimensional Fixed-Source Neutron Diffusion Problem

Thomas J. Downar, Deokjung Lee, Yonghee Kim, 2004 .

Reactivity space analysis of PWR core depletion

Thomas J. Downar, 1987 .

An optimally diffusive Coarse Mesh Finite Difference method to accelerate neutron transport calculations

Thomas J. Downar, Brendan Kochunas, Edward W. Larsen, 2016 .

Multi-level coarse mesh finite difference acceleration with local two-node nodal expansion method

Thomas J. Downar, Yunlin Xu, Chen Hao, 2018, Annals of Nuclear Energy.