20032020
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Research Output 2003 2020

2020

A possible application of catastrophe theory to boiling water reactor instability

Pázsit, I., Dykin, V., Konno, H. & Kozlowski, T., Jan 2020, In : Progress in Nuclear Energy. 118, 103054.

Research output: Contribution to journalArticle

catastrophe theory
Boiling water reactors
hysteresis
Hysteresis
bifurcation

Design optimization under uncertainty of hybrid fuel cell energy systems for power generation and cooling purposes

Radaideh, M. I., Radaideh, M. I. & Kozlowski, T., Jan 13 2020, In : International Journal of Hydrogen Energy. 45, 3, p. 2224-2243 20 p.

Research output: Contribution to journalArticle

design optimization
fuel cells
Power generation
Fuel cells
Cooling

Surrogate modeling of advanced computer simulations using deep Gaussian processes

Radaideh, M. I. & Kozlowski, T., Mar 2020, In : Reliability Engineering and System Safety. 195, 106731.

Research output: Contribution to journalArticle

Computer simulation
Screening
Nuclear engineering
Hydraulic fluids
Uncertainty analysis
2019

Advanced BWR criticality safety part I: Model development, model benchmarking, and depletion with uncertainty analysis

Radaideh, M. I., Price, D., O'Grady, D. & Kozlowski, T., May 2019, In : Progress in Nuclear Energy. 113, p. 230-246 17 p.

Research output: Contribution to journalArticle

Control rods
Uncertainty analysis
benchmarking
uncertainty analysis
Benchmarking

Advanced BWR criticality safety part II: Cask criticality, burnup credit, sensitivity, and uncertainty analyses

Price, D., Radaideh, M. I., O'Grady, D. & Kozlowski, T., Aug 2019, In : Progress in Nuclear Energy. 115, p. 126-139 14 p.

Research output: Contribution to journalArticle

Spent fuels
safety
Isotopes
actinide
Actinides

Analysis of sensitivity and uncertainty quantification for transient simulation with the emphasis on changes in the transient structure

Borowiec, K., Pigg, C. & Kozlowski, T., Jan 1 2019, p. 5239-5252. 14 p.

Research output: Contribution to conferencePaper

sensitivity
Void fraction
simulation
Engines
Fourier analysis

A new framework for sampling-based uncertainty quantification of the six-group reactor kinetic parameters

Radaideh, M. I., Wieselquist, W. A. & Kozlowski, T., May 2019, In : Annals of Nuclear Energy. 127, p. 1-11 11 p.

Research output: Contribution to journalArticle

Kinetic parameters
Neutrons
Sampling
Isotopes
Uncertainty
Uncertainty analysis
Flow simulation
Two phase flow
Sensitivity analysis
Boiling water reactors

Combining simulations and data with deep learning and uncertainty quantification for advanced energy modeling

Radaideh, M. I. & Kozlowski, T., Nov 1 2019, In : International Journal of Energy Research. 43, 14, p. 7866-7890 25 p.

Research output: Contribution to journalArticle

Learning systems
Nuclear engineering
Analysis of variance (ANOVA)
Nuclear energy
Artificial intelligence

Coupling Methods for HTR-PM Multicircuit Problem

Lu, J., Guo, J., Kozlowski, T. & Li, F., Feb 1 2019, In : Nuclear Science and Engineering. 193, 1-2, p. 131-146 16 p.

Research output: Contribution to journalArticle

Networks (circuits)
Steam generators
Reactor cores
Convergence of numerical methods
Newton-Raphson method

Data-Driven and Precursor-Group Uncertainty Propagation of Lattice Kinetic Parameters in UAM Benchmark

Radaideh, M. I., Kozlowski, T., Wieselquist, W. A. & Jessee, M. A., Jan 1 2019, In : Science and Technology of Nuclear Installations. 2019, 3702014.

Research output: Contribution to journalArticle

Open Access
Kinetic parameters
Neutrons
Uncertainty
Control rods
Void fraction

Demonstration of the relationship between sensitivity and identifiability for inverse uncertainty quantification

Wu, X., Shirvan, K. & Kozlowski, T., Nov 1 2019, In : Journal of Computational Physics. 396, p. 12-30 19 p.

Research output: Contribution to journalArticle

Uncertainty Quantification
Identifiability
Calibration
Demonstrations
Discrepancy

Determination and validation of photon energy absorption buildup factor in human tissues using Monte Carlo simulation

Jarrah, I., Radaideh, M. I., Kozlowski, T. & Rizwan-uddin, Jul 2019, In : Radiation Physics and Chemistry. 160, p. 15-25 11 p.

Research output: Contribution to journalArticle

energy absorption
photons
simulation
progressions
penetration

Development and assessment of adjoint sensitivity analysis method for transient two-phase flow simulations

Hu, G. & Kozlowski, T., Jan 1 2019, p. 2246-2259. 14 p.

Research output: Contribution to conferencePaper

Flow simulation
sensitivity analysis
two phase flow
Control theory
Two phase flow

Effect of mesh refinement on the estimation of model input parameters using Inverse Uncertainty Quantification

Abu Saleem, R. A. & Kozlowski, T., Oct 2019, In : Annals of Nuclear Energy. 132, p. 271-276 6 p.

Research output: Contribution to journalArticle

Maximum likelihood estimation
Hydraulics
Friction
Sensitivity analysis
Uncertainty
Probability density function
Hydraulics
Boundary conditions
Friction
Inlet flow
Statistics
Uncertainty
Nuclear engineering
Light water reactors
Void fraction

Inverse uncertainty quantification by hierarchical Bayesian inference for TRACE physical model parameters based on BFBT benchmark

Wang, C., Wu, X. & Kozlowski, T., Jan 1 2019, p. 4795-4807. 13 p.

Research output: Contribution to conferencePaper

inference
Markov chains
sampling
Sampling
Markov processes

Loss of coolant accident analysis under restriction of reverse flow

Radaideh, M. I., Kozlowski, T. & Farawila, Y. M., Sep 2019, In : Nuclear Engineering and Technology. 51, 6, p. 1532-1539 8 p.

Research output: Contribution to journalArticle

Open Access
Loss of coolant accidents
Coolants
Temperature
Boiling water reactors
Cooling water
Jacobian matrices
eigenvalue
Eigenvalues and eigenfunctions
eigenvectors
eigenvalues

On using computational versus data-driven methods for uncertainty propagation of isotopic uncertainties

Radaideh, M. I., Price, D. & Kozlowski, T., Jan 1 2019, (Accepted/In press) In : Nuclear Engineering and Technology.

Research output: Contribution to journalArticle

Open Access
Chemical analysis
Isotopes
Uncertainty
Assays
Geometry

Review of Progress in Coated Fuel Particle Performance Analysis

Baghdasaryan, N. & Kozlowski, T., Jan 1 2019, (Accepted/In press) In : Nuclear Science and Engineering.

Research output: Contribution to journalReview article

Coated fuel particles
High temperature gas reactors
Nuclear reactors
Security systems
Coolants

Shapley effect application for variance-based sensitivity analysis of the few-group cross-sections

Radaideh, M. I., Surani, S., O'Grady, D. & Kozlowski, T., Jul 2019, In : Annals of Nuclear Energy. 129, p. 264-279 16 p.

Research output: Contribution to journalArticle

Sensitivity analysis
Game theory
Costs
Uncertainty
Hot Temperature

Uncertainty analysis of rod ejection accident in VVER-1000 reactor

Miglierini, B., Kozlowski, T. & Kopecek, V., Oct 2019, In : Annals of Nuclear Energy. 132, p. 628-635 8 p.

Research output: Contribution to journalReview article

Uncertainty analysis
Accidents
Moderators
Thermal conductivity
Temperature

Uncertainty quantification of model-form and predictive uncertainties in nuclear codes using Bayesian framework

Radaideh, M. I., Borowiec, K. & Kozlowski, T., Jan 1 2019, International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019. American Nuclear Society, p. 2775-2784 10 p. (International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, M and C 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Uncertainty Quantification
Uncertainty
Void Fraction
Model
Methodology

Validation and uncertainty quantification for two-phase natural circulation flows using trace code

Borowiec, K., Kozlowski, T. & Brooks, C. S., Jan 1 2019, p. 4615-4623. 9 p.

Research output: Contribution to conferencePaper

Void fraction
sensitivity
voids
heat flux
annuli
2018

Adjoint sensitivity analysis of the two-phase two-fluid model

Hu, G. & Kozlowski, T., Jan 1 2018, AISTech 2018 Proceedings - Iron and Steel Technology Conference and Exposition. Association for Iron and Steel Technology, AISTECH, p. 1169-1172 4 p. (AISTech - Iron and Steel Technology Conference Proceedings; vol. 2018-May).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sensitivity analysis
Fluids

Adjoint sensitivity analysis of the two-phase two-fluid model

Hu, G. & Kozlowski, T., Jan 1 2018, In : Transactions of the American Nuclear Society. 118, p. 1169-1172 4 p.

Research output: Contribution to journalConference article

Sensitivity analysis
Fluids

Application of continuous adjoint method to steady-state two-phase flow simulations

Hu, G. & Kozlowski, T., Jul 2018, In : Annals of Nuclear Energy. 117, p. 202-212 11 p.

Research output: Contribution to journalArticle

Flow simulation
Two phase flow
Sensitivity analysis
Uncertainty analysis
Boiling liquids

Application of implicit Roe-type scheme and Jacobian-Free Newton-Krylov method to two-phase flow problems

Hu, G. & Kozlowski, T., Sep 2018, In : Annals of Nuclear Energy. 119, p. 180-190 11 p.

Research output: Contribution to journalArticle

Newton-Raphson method
Eigenvalues and eigenfunctions
Two phase flow
Fluxes
Jacobian matrices
Jacobian matrices
Equations of state
equation of state
equations of state
matrix

Bayesian calibration and uncertainty quantification for trace based on PSBT benchmark

Wang, C., Wu, X., Borowiec, K. & Kozlowski, T., Jan 1 2018, In : Transactions of the American Nuclear Society. 118, p. 419-422 4 p.

Research output: Contribution to journalConference article

Calibration
Uncertainty

Bayesian calibration and uncertainty quantification for TRACE based on PSBT benchmark

Wang, C., Wu, X., Borowiec, K. & Kozlowski, T., Jan 1 2018, AISTech 2018 Proceedings - Iron and Steel Technology Conference and Exposition. Association for Iron and Steel Technology, AISTECH, p. 419-422 4 p. (AISTech - Iron and Steel Technology Conference Proceedings; vol. 2018-May).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Calibration
Uncertainty

Confirmation of Wilks’ method applied to TRACE model of boiling water reactor spray cooling experiment

Mui, T. & Kozlowski, T., Jul 2018, In : Annals of Nuclear Energy. 117, p. 53-59 7 p.

Research output: Contribution to journalArticle

Boiling water reactors
Cooling
Experiments
Hydraulics
Statistics

Coupling methods for HTR-PM primary circuit

Lu, J., Guo, J., Kozlowski, T. & Li, F., Jun 2018, In : Annals of Nuclear Energy. 116, p. 20-30 11 p.

Research output: Contribution to journalArticle

High temperature gas reactors
Reactor cores
Networks (circuits)
Newton-Raphson method
Steam generators

Criticality and uncertainty assessment of assembly misloading in BWR transportation cask

Radaideh, M. I., Price, D. & Kozlowski, T., Mar 2018, In : Annals of Nuclear Energy. 113, p. 1-14 14 p.

Research output: Contribution to journalArticle

Fission products
Gadolinium
Actinides
Spent fuels
Uncertainty
Uncertainty
Hydraulics
Nuclear engineering
Uncertainty analysis
Void fraction

Implicit second-order scheme for steady-state thermal-hydraulic simulations

Hu, G. & Kozlowski, T., Jan 1 2018, AISTech 2018 Proceedings - Iron and Steel Technology Conference and Exposition. Association for Iron and Steel Technology, AISTECH, p. 1165-1168 4 p. (AISTech - Iron and Steel Technology Conference Proceedings; vol. 2018-May).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hydraulics
Hot Temperature

Implicit second-order scheme for steady-state thermal-hydraulic simulations

Hu, G. & Kozlowski, T., Jan 1 2018, In : Transactions of the American Nuclear Society. 118, p. 1165-1168 4 p.

Research output: Contribution to journalConference article

Hydraulics
Hot Temperature

Inverse uncertainty quantification of trace physical model parameters using BFBT benchmark with investigation of measurement bias

Borowiec, K. & Kozlowski, T., Jan 1 2018, AISTech 2018 Proceedings - Iron and Steel Technology Conference and Exposition. Association for Iron and Steel Technology, AISTECH, p. 437-440 4 p. (AISTech - Iron and Steel Technology Conference Proceedings; vol. 2018-May).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Uncertainty
Uncertainty

Inverse uncertainty quantification using the modular Bayesian approach based on Gaussian process, Part 1: Theory

Wu, X., Kozlowski, T., Meidani, H. & Shirvan, K., Aug 15 2018, In : Nuclear Engineering and Design. 335, p. 339-355 17 p.

Research output: Contribution to journalArticle

formulations
design analysis
Bayesian analysis
nuclear reactors
prediction
Probability distributions
Uncertainty
test
Void fraction
self assessment

Investigation of VVER-1000 rod ejection accident according to the Phenomenon Identification and Ranking Tables for PWR

Miglierini, B. & Kozlowski, T., Sep 2018, In : Progress in Nuclear Energy. 108, p. 438-444 7 p.

Research output: Contribution to journalArticle

Control rods
Pressurized water reactors
ranking
accident
Reactor cores
Nuclear fuels
Time series
Gases
Nuclear reactors
Principal component analysis

On the connection between sensitivity and identifiability for inverse uncertainty quantification

Wu, X., Shirvan, K. & Kozlowski, T., Jan 1 2018, AISTech 2018 Proceedings - Iron and Steel Technology Conference and Exposition. Association for Iron and Steel Technology, AISTECH, p. 411-414 4 p. (AISTech - Iron and Steel Technology Conference Proceedings; vol. 2018-May).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Uncertainty

On the connection between sensitivity and identifiability for inverse uncertainty quantification

Wu, X., Shirvan, K. & Kozlowski, T., Jan 1 2018, In : Transactions of the American Nuclear Society. 118, p. 411-414 4 p.

Research output: Contribution to journalConference article

Uncertainty

Simulation of PWR load follow operation using VERA-CS

O'Grady, D., Mui, T. & Kozlowski, T., Jan 1 2018, In : Transactions of the American Nuclear Society. 119, p. 1065-1068 4 p.

Research output: Contribution to journalConference article

Validating trace void fraction predictive capability using the quantitative area validation metric

Wu, X., Shirvan, K. & Kozlowski, T., Jan 1 2018, In : Transactions of the American Nuclear Society. 118, p. 423-426 4 p.

Research output: Contribution to journalConference article

Void fraction

Validating TRACE void fraction predictive capability using the quantitative area validation metric

Wu, X., Shirvan, K. & Kozlowski, T., Jan 1 2018, AISTech 2018 Proceedings - Iron and Steel Technology Conference and Exposition. Association for Iron and Steel Technology, AISTECH, p. 423-426 4 p. (AISTech - Iron and Steel Technology Conference Proceedings; vol. 2018-May).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Void fraction