Xu Wu
Nuclear Engineering
Dr. Wu received his B.S. degree in nuclear engineering from the Shanghai Jiao Tong University in China in 2011. He obtained his Ph.D. degree in nuclear engineering in 2017 from the University of Illinois at Urbana – Champaign. Prior to joining NCSU, he was a Postdoctoral Research Associate in the Department of Nuclear Science and Engineering at Massachusetts Institute of Technology. more
Works (52)
2026 article
Development of physics-consistent conditional diffusion model to overcome data scarcity in critical heat flux
Alsafadi, F., Akins, A., & Wu, X. (2026, February 14). Energy and AI.
2026 article
Nuclear Data Adjustment for Nonlinear Applications in the OECD/NEA WPNCS SG14 Benchmark—A Bayesian Inverse UQ-Based Approach for Data Assimilation
Brady, C., & Wu, X. (2026, February 9). Nuclear Science and Engineering, Vol. 2.
2025 article
An investigation on machine learning predictive accuracy improvement and uncertainty reduction using VAE-based data augmentation
Alsafadi, F., Yaseen, M., & Wu, X. (2025, September 11). Nuclear Engineering and Design, Vol. 445.
2025 article
Bayesian Calibration and Sensitivity Analysis of Rayleigh Scattering Fiber Optic Distributed Temperature Sensing in Water Flow Loop
Kohler, L., Lisowski, D., Weathered, M., Wu, X., & Heifetz, A. (2025, August 20). Nuclear Science and Engineering, Vol. 8.
2025 article
Data-driven prediction and uncertainty quantification of PWR crud-induced power shift using convolutional neural networks
Furlong, A., Alsafadi, F., Palmtag, S., Godfrey, A., & Wu, X. (2025, January 11). Energy, Vol. 316.
2025 article
Monte Carlo Dropout Uncertainty Quantification of Long Short-Term Memory Autoencoder Anomaly Detection in a Liquid Sodium Cold Trap
Akins, A., Kultgen, D., Wu, X., & Heifetz, A. (2025, September 26). Nuclear Technology, Vol. 9.
2025 article
Physics-based hybrid machine learning for critical heat flux prediction with uncertainty quantification
Furlong, A., Zhao, X., Salko, R. K., & Wu, X. (2025, July 15). Applied Thermal Engineering, Vol. 279.
2025 article
Predicting critical heat flux with uncertainty quantification and domain generalization using conditional variational autoencoders and deep neural networks
Alsafadi, F., Furlong, A., & Wu, X. (2025, April 28). Annals of Nuclear Energy, Vol. 220.
2025 article
Sensitivity and uncertainty analysis in pebble-bed reactors: A study using the High-Temperature Code Package (HCP)
Yaseen, M., Sadek, A., Osman, W., Altahhan, M., Wu, X., Avramova, M., & Ivanov, K. (2025, April 10). Annals of Nuclear Energy, Vol. 219.
2025 article
Uncertainty Quantification for Data-Driven Machine Learning Models in Nuclear Engineering Applications: Where We Are and What Do We Need?
Wu, X., Moloko, L. E., Bokov, P. M., Delipei, G. K., Kaizer, J., & Ivanov, K. N. (2025, October 22). Nuclear Science and Engineering.
2024 article
A systematic approach for the adequacy analysis of a set of experimental databases: Application in the framework of the ATRIUM activity
Baccou, J., Glantz, T., Ghione, A., Sargentini, L., Fillion, P., Damblin, G., … Adorni, M. (2024, March 2). Nuclear Engineering and Design, Vol. 421.
2024 article
ARTISANS—Artificial Intelligence for Simulation of Advanced Nuclear Systems for Nuclear Fission Technology
Akins, A., Furlong, A., Kohler, L., Clifford, J., Brady, C., Alsafadi, F., & Wu, X. (2024, April 1). Nuclear Engineering and Design, Vol. 423.
Contributors: A. Akins n, A. Furlong n , L. Kohler n, J. Clifford n, C. Brady n, F. Alsafadi n, n
2024 article
Clustering and uncertainty analysis to improve the machine learning-based predictions of SAFARI-1 control follower assembly axial neutron flux profiles
Moloko, L. E., Bokov, P. M., Wu, X., & Ivanov, K. N. (2024, May 28). Annals of Nuclear Energy, Vol. 206.
2024 article
Design considerations and Monte Carlo criticality analysis of spiral plate heat exchangers for Molten Salt Reactors
Brady, C., Murray, W., Moss, L., Zino, J., Saito, E., & Wu, X. (2024, May 20). Progress in Nuclear Energy, Vol. 173.
2024 article
Functional PCA and deep neural networks-based Bayesian inverse uncertainty quantification with transient experimental data
Xie, Z., Yaseen, M., & Wu, X. (2024, January 5). Computer Methods in Applied Mechanics and Engineering, Vol. 420.
2024 article
Hierarchical Bayesian modeling for Inverse Uncertainty Quantification of system thermal-hydraulics code using critical flow experimental data
Xie, Z., Wang, C., & Wu, X. (2024, December 3). International Journal of Heat and Mass Transfer, Vol. 239.
2023 article
Deep generative modeling-based data augmentation with demonstration using the BFBT benchmark void fraction datasets
Alsafadi, F., & Wu, X. (2023, October 31). Nuclear Engineering and Design, Vol. 415.
2023 article
Fast and accurate reduced-order modeling of a MOOSE-based additive manufacturing model with operator learning
Yaseen, M., Yushu, D., German, P., & Wu, X. (2023, October 21). The International Journal of Advanced Manufacturing Technology, Vol. 129, pp. 3123–3139.
2023 report
Inverse Uncertainty Quantification by Hierarchical Bayesian Modeling and Application in Nuclear System Thermal-Hydraulics Codes
In arXiv (Cornell University) (ArXiv Preprint No. 2305.16622).
2023 article
Prediction and uncertainty quantification of SAFARI-1 axial neutron flux profiles with neural networks
Moloko, L. E., Bokov, P. M., Wu, X., & Ivanov, K. N. (2023, March 22). Annals of Nuclear Energy.
2023 article
Scalable Inverse Uncertainty Quantification by Hierarchical Bayesian Modeling and Variational Inference
Wang, C., Wu, X., Xie, Z., & Kozlowski, T. (2023, November 20). Energies, Vol. 16.
2022 article
Quantification of Deep Neural Network Prediction Uncertainties for VVUQ of Machine Learning Models
Yaseen, M., & Wu, X. (2022, November 2). Nuclear Science and Engineering, Vol. 11.
2021 article
A comprehensive survey of inverse uncertainty quantification of physical model parameters in nuclear system thermal–hydraulics codes
Wu, X., Xie, Z., Alsafadi, F., & Kozlowski, T. (2021, October 4). Nuclear Engineering and Design, Vol. 12.
2021 article
Bayesian inverse uncertainty quantification of a MOOSE-based melt pool model for additive manufacturing using experimental data
Xie, Z., Jiang, W., Wang, C., & Wu, X. (2021, November 11). Annals of Nuclear Energy, Vol. 1.
2021 report
Structural Health Monitoring of Microreactor Safety Systems Using Convolutional Neural Networks
2021 article
Towards improving the predictive capability of computer simulations by integrating inverse Uncertainty Quantification and quantitative validation with Bayesian hypothesis testing
Xie, Z., Alsafadi, F., & Wu, X. (2021, August 31). Nuclear Engineering and Design, Vol. 11.
2020 article
Application of Kriging and Variational Bayesian Monte Carlo method for improved prediction of doped UO2 fission gas release
Che, Y., Wu, X., Pastore, G., Li, W., & Shirvan, K. (2020, December 17). Annals of Nuclear Energy, Vol. 153.
2020 article
Enhancing the One-Dimensional SFR Thermal Stratification Model via Advanced Inverse Uncertainty Quantification Methods
Lu, C., Wu, Z., & Wu, X. (2020, October 16). Nuclear Technology, Vol. 10, pp. 1–19.
2020 article
System code evaluation of near-term accident tolerant claddings during pressurized water reactor station blackout accidents
Jin, Y., Wu, X., & Shirvan, K. (2020, August 19). Nuclear Engineering and Design, Vol. 368.
2019 article
Demonstration of the relationship between sensitivity and identifiability for inverse uncertainty quantification
Wu, X., Shirvan, K., & Kozlowski, T. (2019, June 21). Journal of Computational Physics, Vol. 396, pp. 12–30.
2018 conference paper
Bayesian calibration and uncertainty quantification for trace based on PSBT benchmark
Transactions of the American Nuclear Society, 118, 419–422. http://www.scopus.com/inward/record.url?eid=2-s2.0-85062963843&partnerID=MN8TOARS
2018 article
Gaussian Process–Based Inverse Uncertainty Quantification for TRACE Physical Model Parameters Using Steady-State PSBT Benchmark
Wang, C., Wu, X., & Kozlowski, T. (2018, August 10). Nuclear Science and Engineering, Vol. 193, pp. 100–114.
Contributors: C. Wang *, * & T. Kozlowski *
2018 article
Inverse uncertainty quantification using the modular Bayesian approach based on Gaussian Process, Part 2: Application to TRACE
Wu, X., Kozlowski, T., Meidani, H., & Shirvan, K. (2018, June 19). Nuclear Engineering and Design, Vol. 335, pp. 417–431.
Contributors: * , T. Kozlowski *, H. Meidani * & K. Shirvan *
2018 article
Inverse uncertainty quantification using the modular Bayesian approach based on Gaussian process, Part 1: Theory
Wu, X., Kozlowski, T., Meidani, H., & Shirvan, K. (2018, June 19). Nuclear Engineering and Design, Vol. 335, pp. 339–355.
Contributors: * , T. Kozlowski *, H. Meidani * & K. Shirvan *
2018 conference paper
On the connection between sensitivity and identifiability for inverse uncertainty quantification
Transactions of the American Nuclear Society, 118, 411–414. http://www.scopus.com/inward/record.url?eid=2-s2.0-85062995468&partnerID=MN8TOARS
2018 conference paper
Sensitivity and uncertainty analysis for fuel performance evaluation of Cr 2 O 3 -doped UO 2 fuel under LB-LOCA
Transactions of the American Nuclear Society, 119, 440–443. http://www.scopus.com/inward/record.url?eid=2-s2.0-85060860913&partnerID=MN8TOARS
2018 conference paper
System code evaluation of accident tolerant claddings during BWR station blackout accident
Transactions of the American Nuclear Society, 119, 444–447. http://www.scopus.com/inward/record.url?eid=2-s2.0-85060862292&partnerID=MN8TOARS
2018 conference paper
Validating trace void fraction predictive capability using the quantitative area validation metric
Transactions of the American Nuclear Society, 118, 423–426. http://www.scopus.com/inward/record.url?eid=2-s2.0-85062957450&partnerID=MN8TOARS
2017 article
Inverse uncertainty quantification of TRACE physical model parameters using sparse gird stochastic collocation surrogate model
Wu, X., Mui, T., Hu, G., Meidani, H., & Kozlowski, T. (2017, May 20). Nuclear Engineering and Design, Vol. 319, pp. 185–200.
Contributors: * , T. Mui *, G. Hu *, H. Meidani * & T. Kozlowski *
2017 conference paper
Kriging-based inverse uncertainty quantification of BISON fission gas release model
Transactions of the American Nuclear Society, 116, 629–632. http://www.scopus.com/inward/record.url?eid=2-s2.0-85033468956&partnerID=MN8TOARS
2017 article
Kriging-based inverse uncertainty quantification of nuclear fuel performance code BISON fission gas release model using time series measurement data
Wu, X., Kozlowski, T., & Meidani, H. (2017, October 4). Reliability Engineering & System Safety, Vol. 169, pp. 422–436.
Contributors: * , T. Kozlowski * & H. Meidani *
2017 conference paper
Sensitivity and uncertainty analysis of TRACE Physical Model Parameters based on PSBT benchmark using Gaussian process emulator
17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2017, 2017-September. http://www.scopus.com/inward/record.url?eid=2-s2.0-85051935457&partnerID=MN8TOARS
2017 conference paper
Surrogate-based inverse uncertainty quantification of TRACE physical model parameters using steady-state PSBT void fraction data
17th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 2017, 2017-September. http://www.scopus.com/inward/record.url?eid=2-s2.0-85051987392&partnerID=MN8TOARS
2016 article
Inverse uncertainty quantification of reactor simulations under the Bayesian framework using surrogate models constructed by polynomial chaos expansion
Wu, X., & Kozlowski, T. (2016, December 18). Nuclear Engineering and Design, Vol. 313, pp. 29–52.
Contributors: * & T. Kozlowski *
2015 conference paper
Evaluation of accident tolerant FeCrAl coating for PWR cladding under normal operating conditions with coupled neutron transport and fuel performance
Mathematics and Computations, Supercomputing in Nuclear Applications and Monte Carlo International Conference, M and C+SNA+MC 2015, 3, 2334–2344. http://www.scopus.com/inward/record.url?eid=2-s2.0-84949522107&partnerID=MN8TOARS
2015 article
Neutronics and fuel performance evaluation of accident tolerant FeCrAl cladding under normal operation conditions
Wu, X., Kozlowski, T., & Hales, J. D. (2015, July 2). Annals of Nuclear Energy, Vol. 85, pp. 763–775.
Contributors: * , T. Kozlowski * & J. Hales *
2014 conference paper
Coupling of system thermal-hydraulics and monte-carlo method for a consistent thermal-hydraulics-reactor physics feedback
International Congress on Advances in Nuclear Power Plants, ICAPP 2014, 2, 1164–1174. http://www.scopus.com/inward/record.url?eid=2-s2.0-84907077778&partnerID=MN8TOARS
2014 article
Coupling of system thermal–hydraulics and Monte-Carlo code: Convergence criteria and quantification of correlation between statistical uncertainty and coupled error
Wu, X., & Kozlowski, T. (2014, September 16). Annals of Nuclear Energy, Vol. 75, pp. 377–387.
Contributors: * & T. Kozlowski *
2014 conference paper
Neutronics analysis of improved accident tolerance LWR fuel by modifing Zircaloy cladding of fuel pins
International Congress on Advances in Nuclear Power Plants, ICAPP 2014, 1, 159–166. http://www.scopus.com/inward/record.url?eid=2-s2.0-84907085456&partnerID=MN8TOARS
2014 report
Neutronics and Fuel Performance Evaluation of Accident Tolerant Fuel under Normal Operation Conditions
2014 conference paper
Uncertainty quantification for coupled Monte Carlo and thermal-hydraulics codes
Transactions of the American Nuclear Society, 110, 189–191. http://www.scopus.com/inward/record.url?eid=2-s2.0-84904692027&partnerID=MN8TOARS
2013 conference paper
Engineered Zircaloy cladding modifications for improved accident tolerance of LWR fuel: A summary
LWR Fuel Performance Meeting, Top Fuel 2013, 1, 56–58. http://www.scopus.com/inward/record.url?eid=2-s2.0-84902344678&partnerID=MN8TOARS
Contributors: B. Heuser, T. Kozlowski & W. Xu
Employment
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2019 - 2025
2017 - 2019
Education
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2011 - 2013
2007 - 2011