2018

  1. J.P. Senecal and W. Ji, “Development of an Efficient Tightly Coupled Method for Multiphysics Reactor Transient Analysis,” Progress in Nuclear Energy, Vol. 103, pp. 33-44 (2018).
    [online]

2017

  1. J.P. Senecal and W. Ji, “Approaches for Mitigating Over-Solving in Multiphysics Simulations”, International Journal for Numerical Methods in Engineering Vol. 112, pp. 503-528 (2017). [online]
  2. J.P. Senecal and W. Ji, “Addressing Over-Solving in Multiphysics Codes with Nested Solvers”, ANS Annual Meeting 2017, San Francisco, CA (2017).
  3. M.D. Eklund, M. Dupont, P.F. Caracappa, W. Ji, “Neutronics Simulations of the RPI Walthousen Reactor Critical Facility (RCF) Using Proteus-SN”, ANS Winter Meeting 2017, Washington, D.C. (2017).
  4. M. Dupont, M.D. Eklund, P.F. Caracappa, W. Ji, “Design of Neutronics and Thermal Hydraulics Coupling Critical Experiments”, ANS Winter Meeting 2017, Washington, D.C. (2017).
  5. C.G. Morrison and W. Ji, “Improving Prompt Temperature Feedback By Stimulating Doppler Broadening in Heterogeneous Composite Nuclear Fuel Forms,” Annals of Nuclear Energy, accepted (2017)

2016

  1. C.G. Morrison, W. Ji, and J.P. Senecal, “Coupled Neutronics and Heat Transfer in Accident Tolerant Composite Matrix Nuclear Fuels”, Transactions of the American Nuclear Society PHYSOR, Sun Valley, ID (2016).
  2. A.T. Pavlou, W. Ji, and F.B. Brown, “Verification of the On-the-Fly Thermal Scattering Sampling Method for Bound Hydrogen in Light Water”, Transactions of the American Nuclear Society PHYSOR, Sun Valley, ID (2016).
  3. J.P. Senecal and W. Ji, “A Novel Tightly Coupled Method for Reactor Transient Simulations”, Transactions of the American Nuclear Society PHYSOR, Sun Valley, ID (2016).
  4. M. Dupont, M.D. Eklund, P.F. Caracappa, W. Ji, “Development of Critical Experiments to Benchmark Moderator Temperature Reactivity Worth”, ANS Winter Meeting 2016, Las Vegas, NV (2016).
  5. M.D. Eklund, M. Dupont, P.F. Caracappa, W. Ji, “Computational Modeling, Simulation and Analysis of the RPI Walthousen Reactor Critical Facility (RCF)”, ANS Winter Meeting 2016, Las Vegas, NV (2016).
  6. E.N. Pusateri, H.E. Morris, E.M. Nelson, and W. Ji, “Comparison of Equilibrium Ohmic and Non-Equilibrium Electron Swarm Models for Monitoring Conduction Electron Evolution in High Altitude EMP Calculations,” Journal of Geophysical Research: Atmospheres, Vol. 121, pp. 11,884-11,899 (2016). [online]
  7. A.T. Pavlou, W. Ji, and F.B. Brown, “Implementation and Testing of the On-the-Fly Thermal Scattering Monte Carlo Sampling Method for Graphite and Light Water in MCNP6,” Annals of Nuclear Energy, Vol. 91, pp. 111-126 (2016). [online]
  8. A.T. Pavlou and W. Ji, “Phonon-Based Mesh Optimization for the Monte Carlo On-the-Fly Thermal Scattering Temperature Fit Coefficients,” Nuclear Engineering and Design, Vol. 302B, pp. 70-80 (2016). [online]

2015

  1. A.T. Pavlou, W. Ji, F.B. Brown, “Implementation of a Least Squares Temperature Fit of the Thermal Scattering Law in MCNP6″, Proceedings of the Joint International Conference on Mathematics and Computation (M&C), Supercomputing in Nuclear Applications (SNA) and the Monte Carlo (MC) Method, Nashville, TN (2015).
  2. A.T. Pavlou, W. Ji, “A Study of the Frequency Spectrum of Thermal Excitations for On-the-Fly Monte Carlo Thermal Scattering Sampling”, Transactions of the American Nuclear Society Student Conference at Texas A&M University, College Station, TX (2015).
  3. J.P. Senecal and W. Ji, “Comparison of Multiphysics Boundary Value Problem Coupling Strategies in MOOSE”, Transactions of the American Nuclear Society Student Conference at Texas A&M University, College Station, TX (2015).
  4. E. N. Pusateri, H. E. Morris, E. M. Nelson, and W. Ji., “Determination of Equilibrium Electron Temperature and Times Using an Electron Swarm Model with BOLSIG+ Calculated Collision Frequencies and Rate Coefficients”, Journal of Geophysical Research: Atmospheres, 2015. (2015).
  5. A.T. Pavlou and W. Ji, “The Temperature Zoning Method for On-the-Fly Thermal Scattering Sampling Procedure”, ANS Winter Meeting 2015, Washington, D.C. (2015).
  6. J.P. Senecal and W. Ji, “Comparison of Novel Coupling Methods in MOOSE”, ANS Winter Meeting 2015, Washington, D.C. (2015).
  7. J. Ortensi, M. Ellis, Y. Wang, H.R. Hammer, J.P. Senecal, F.N. Gleicher, S. Schunert, M.D. DeHart, K. Smith, and R. Martineau, “Solution of the Hot Zero Power BEAVRS Using a Pin-Cell Homogenized Model”, ANS Winter Meeting 2015, Washington, D.C. (2015).

2014

  1. A.T. Pavlou, W. Ji, “A New On-the-Fly Sampling Method at Thermal Energies for Monte Carlo Codes”, ANS Winter Meeting 2014, Anaheim, CA (2014).
  2. E. N. Pusateri, H.E. Morris, and W. Ji, “Analysis of Electron Evolution in Air using Updated Cross Section Data”, Bulletin of the American Physical Society, APS:DPP Conference Abstract, LA-UR-14-25207, New Orleans, LA (2014).
  3. E. N. Pusateri, H.E. Morris, “Determination of Equilibrium Electron Temperature and Time using an Electron Swarm Model with Updated Collision Frequencies and Rate Coefficients”, DOE/LANL Sponsored Technical Report LA-UR-14-29015, Los Alamos, NM (2014).
  4. A.T. Pavlou, F.B. Brown, W. Ji, “A New On-the-Fly Sampling Method for Incoherent Inelastic Thermal Neutron Scattering Data in MCNP6″, Los Alamos National Laboratory Report LA-UR-14-26856 (2014).
  5. A.T. Pavlou, W. Ji, “A Temperature Dependence Study of Alpha/Beta Cumulative Distribution Functions Based on S(α,β) Data”, ANS Annual Meeting 2014, Reno, NV (2014).
  6. A.T. Pavlou, W. Ji, “On-the-Fly Sampling of Temperature-Dependent Thermal Neutron Scattering Data for Monte Carlo Simulations”, Annals of Nuclear Energy, Vol. 71, pp. 411-426 (2014).
  7. A.T. Pavlou, M. Wart, W. Ji, T. H. Trumbull, “On-the-Fly Sampling of Thermal Scattering S(α,β,T) Data for Monte Carlo Codes”, International Congress on Advances in Nuclear Power Plants (ICAPP) 2014, Charlotte, North Carolina (2014).
  8. A.T. Pavlou, W. Ji, “A Temperature Dependence Study of Alpha/Beta Cumulative Distribution Functions Based on S(α,β) Data”, ANS Student Conference 2014, State College, PA (2014).

2013

  1. Xu, X. G., Tianyu Liu, Lin Su, Xining Du, Matthew Riblett, W. Ji and F. B. Brown, “An Update of ARCHER, a Monte Carlo Radiation Transport Software Testbed for Emerging Hardware Such as GPUs,” Trans. Am. Nucl. Soc., 108, 433-434 (2013) [pdf]
  2. Li, Y. and W. Ji, “Stability and Convergence Analysis of a Dynamics-based Collective Method for Random Sphere Packing,” Journal of Computational Physics, 250, 373-287 (2013) [preprint] [online]
  3. Li, Y. and W. Ji, “Convergence Analysis of a Heuristic Collective Sphere Packing Algorithm,” International Journal of Applied Nonlinear Science, 2013 [preprint] [online]
  4. Peng Q., C. Liang, W. Ji, and S. De, “A First-principles Study of the Mechanical Properties of g-GeC,” Mechanics of Materials, 64, 135-141 (2013) [online]
  5. Liang, C., and W. Ji, “A Neutronic Feasibility Study of AP1000 Design Loaded with Fully Ceramic Micro-Encapsulated Fuel,” Proceedings of International Conference on Mathematics and Computational Methods Applied to Nuclear Science & Engineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, on CD-ROM, pp.1522-1533, American Nuclear Society, LaGrange Park, IL (2013) [pdf]
  6. Liang, C., A. T. Pavlou, and W. Ji, “The Impact of Fuel Particle Size Distribution on Neutron Transport in Stochastic Media,” Proceedings of International Conference on Mathematics and Computational Methods Applied to Nuclear Science & Engineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, on CD-ROM, pp.2279-2290, American Nuclear Society, LaGrange Park, IL (2013) [pdf]
  7. Li, Y., and W. Ji, “Contact Detection Acceleration in Pebble Flow Simulation for Pebble Bed Reactor Systems,” Proceedings of International Conference on Mathematics and Computational Methods Applied to Nuclear Science & Engineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, on CD-ROM, pp.1699-1708, American Nuclear Society, LaGrange Park, IL (2013) [pdf]
  8. Liu, T., X. Du, W. Ji, and X. G. Xu, “Development of GPU-Based Monte Carlo Code for Fast CT Imaging Dose Calculation on CUDA Fermi Architecture,” Proceedings of International Conference on Mathematics and Computational Methods Applied to Nuclear Science & Engineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, on CD-ROM, pp.1199-1210, American Nuclear Society, LaGrange Park, IL (2013) [pdf]
  9. Du, X., T. Liu, W. Ji, X. G. Xu, and F. B. Brown, “Evaluation of Vectorized Monte Carlo Algorithms on GPUs for a Neutron Eigenvalue Problem,” Proceedings of International Conference on Mathematics and Computational Methods Applied to Nuclear Science & Engineering (M&C 2013), Sun Valley, Idaho, USA, May 5-9, 2013, on CD-ROM, pp.2513-2522, American Nuclear Society, LaGrange Park, IL (2013) [pdf]
  10. Li, Y. and W. Ji, “Acceleration of Coupled Granular Flow and Fluid Flow Simulations in Pebble Bed Energy Systems,” Nuclear Engineering and Design, 258, 275-283 (2013) [preprint] [online]
  11. Peng, Q., W. Ji, H.C. Huang and S. De, “Axial Ratio Dependence of the Stability of Self-Interstitials in HCP Structures,” Journal of Nuclear Materials, 437, 293-296 (2013) [online]
  12. Peng, Q., X. Chen, W. Ji, and S. De, “Chemically Tuning Mechanics of Graphene by BN,” Advanced Engineering Materials, 15, 718-727 (2013) [online]
  13. Peng, Q., W. Ji, and S. De, “First-Principles Study of the Effects of Mechanical Strains on the Radiation Hardness of Hexagonal Boron Nitride Monolayers,” Nanoscale, 5, 695-703 (2013) [online]
  14. Liang, C., W. Ji, and F.B. Brown, “Chord Length Sampling Method for Analyzing Stochastic Distribution of Fuel Particles in Continuous Energy Simulations,” Annals of Nuclear Energy, 53, 140-146 (2013) [preprint] [online]
  15. Li, Y. and W. Ji, “Pebble Flow and Coolant Flow Analysis Based on a Fully Coupled Multi-Physics Model,” Nuclear Science and Engineering, 173, 150-162 (2013). [preprint] [online]
  16. Peng, Q., C. Liang, W. Ji, and S. De, “Mechanical Properties of g-GaN: A First Principles Study,” Applied Physics A , (2013) doi: 10.1007/s00339-013-7551-4 [online]
  17. Peng, Q., C. Liang, W. Ji, and S. De, “A Theoretical Analysis of the Effect of the Hydrogenation of Graphene to Graphane on Its Mechanical Properties,” Physical Chemistry Chemical Physics , 15, 2003-2011 (2013) [online]
  18. Peng, Q., C. Liang, W. Ji, and S. De, “A First Principles Investigation of the Mechanical Properties of g-ZnO: the Graphene-like Hexagonal Zinc Oxide Monolayer,” Computational Materials Science , 68, 320-324 (2013) [online]
  19. Tierney, Heidi E., Pusateri, Elise N., Nelson, Eric M., Holmes, Richard L., “Progress on the Development of an Electron Swarm Model for
    Use in CHAP-LA”, HEART Poster (2013), Albuquerque NM.
  20. Pusateri, E., & Tierney, H., “Improving upon an Electron Swarm Model for Investigating Electron Equilibrium Using the Boltzmann Equation.”, LANL Student Symposium (2013), Los Alamos, New Mexico, U.S.: Los Alamos National Lab.
back to top

2012

  1. Peng, Q., C. Liang, W. Ji, and S. De, “A First Principles Investigation of Mechanical Properties of g-TlN,” Modeling and Numerical Simulation of Material Science , 2, 76-84 (2012) [preprint] [online]
  2. Peng, Q., W. Ji, and S. De, “Mechanical Properties of Graphyne Monolayer: A First-Principles Study,” Physical Chemistry Chemical Physics, 14, 13385-13391 (2012) [preprint] [online]
  3. Burke, T., B. R. Betzler, J. C. Lee, W. R. Martin, A. Pavlou and W. Ji, Y. Li, “A Constrained Sampling Methodology for TRISO Microspheres with Continuous Distributions of Diameters,” Trans. Am. Nucl. Soc., 107, 516-518 (2012). [pdf]
  4. Liang, C. and W. Ji, “A Novel Extension of Chord Length Sampling Method for TRISO-Type Applications,” Trans. Am. Nucl. Soc., 107, 551-553 (2012). [pdf]
  5. Pusateri, E.N. and W. Ji, “A New Analytical Model to Evaluate Dancoff Factors in Stochastic Media,” Trans. Am. Nucl. Soc., 107, 554-556 (2012). [pdf]
  6. Peng, Q., W. Ji, H.C. Huang, and S. De, “Stability of Self-interstitial Atoms in hcp-Zr,” Journal of Nuclear Material, 429, 233-236 (2012). [preprint] [online]
  7. Li, Y. and W. Ji, “A Collective Dynamics-based Method for Initial Pebble Packing in Pebble Flow Simulation,” Nuclear Engineering and Design, 250, 229-236 (2012) [preprint] [online]
  8. Peng, Q., A.R. Zamiri, W. Ji, and S. De, “Elastic Properties of Hybrid Graphene/Boron Nitride Monolayer,” Acta Mechanica, 223, 2591-2596 (2012). [preprint] [online]
  9. Liang, C., Y. Li, and W. Ji, “Application of Chord Length Sampling to Analyzing Reactor Systems with Multi-type Multi-size Fuel Particles,” Trans. Am. Nucl. Soc., 106, 339-341 (2012). [pdf]
  10. Liu, T., L. Su, A. Ding, W. Ji, C. Carothers, X. G. Xu and F. B. Brown, “GPU/CUDA-Ready Parallel Monte Carlo Codes for Reactor Analysis and Other Applications,” Trans. Am. Nucl. Soc., 106, 378-379 (2012). [pdf]
  11. Liang, C., W. Ji and F.B. Brown, “Chord Length Sampling Method for Analyzing VHTR Unit Cells in Continuous Energy Simulations,” Proceedings of International Topical Meeting on Advances in Reactor Physics (PHYSOR 2012), Knoxville, Tennessee, USA, April 15-20, 2012. [pdf]
  12. Li, Y. and W. Ji, “Stability and Convergence Analysis of the Quasi-Dynamics Method for Initial Pebble Packing,” Proceedings of International Topical Meeting on Advances in Reactor Physics (PHYSOR 2012), Knoxville, Tennessee, USA, April 15-20, 2012. [pdf]
  13. Liang, C. and W. Ji, “Optimization of Monte Carlo Transport Simulations in Stochastic Media,” Proceedings of International Topical Meeting on Advances in Reactor Physics (PHYSOR 2012), Knoxville, Tennessee, USA, April 15-20, 2012. [pdf]
  14. Li, Y. and W. Ji, “A Simplified DEM-CFD Approach for Pebble Bed Reactor Simulations,” Proceedings of International Topical Meeting on Advances in Reactor Physics (PHYSOR 2012), Knoxville, Tennessee, USA, April 15-20, 2012. [pdf]
  15. Liu, T., A. Ding, W. Ji, X. G. Xu, C. Carothers, and F.B. Brown, “A Monte Carlo Neutron Transport Code for Eigenvalue Calculations on a Dual-GPU System and CUDA Environment,” Proceedings of International Topical Meeting on Advances in Reactor Physics (PHYSOR 2012), Knoxville, Tennessee, USA, April 15-20, 2012. [pdf]
  16. Peng, Q., W. Ji, S. De, “Mechanical Properties of the Hexagonal Boron Nitride Monolayer: ab initio Study,” Computational Materials Science, 56, 11-17 (2012). [online]
  17. Pusateri, Elise N., Snyder, Evan, “Electromagnetic Pulse Simulations – Swarm Electron Time Delay
    in Thunderstorm Environment”, Final Reports from the 2012 Computational Physics Workshop (2012), Los Alamos NM
back to top

2011

  1. Liang, C. and W. Ji, “On the Chord Length Sampling in 1-D Binary Stochastic Media,” Transport Theory and Statistical Physics, 40, 282-303 (2011). (Invited Paper) [online] [postprint]
  2. Li, Y. and W. Ji, “Study on Pebble-Fluid Interaction Effect in Pebble Bed Reactors,” Trans. Am. Nucl. Soc., 105, 524-525 (2011). [pdf]
  3. Liang, C. and W. Ji, “Parameter Sensitivity Study on the Accuracy of Chord Length Sampling Method,” Trans. Am. Nucl. Soc., 105, 495-497 (2011). [pdf]
  4. Li, Y. and W. Ji, “Modeling of Interactions between Fluid-Dynamics and Pebble Flow in Advanced High Temperature Reactors,” Trans. Am. Nucl. Soc., 104, 404-406 (2011). [pdf]
  5. Liang, C. and W. Ji, “Chord Length Sampling in Stochastic Media Packed with Poly-Sized Spheres,” Trans. Am. Nucl. Soc., 104, 331-333 (2011). [pdf]
  6. Ji, W. and W.R. Martin, “The Application of the Chord Method to Obtain Analytical Expressions for Dancoff Factors in Stochastic Media,” Nuclear Science and Engineering, 169, 19-39 (2011) [pdf] [online]
  7. Li, Y. and W. Ji, “A Collective Dynamics-based Method for Initial Pebble Packing in Pebble Flow Simulation,” Proceedings of International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2011), Rio de Janeiro, Brazil, May 8-12, 2011. [pdf]
  8. Ding, A., T. Liu, C. Liang, W. Ji, M.S. Shephard, X.G. Xu and F.B. Brown, “Evaluation of Speedup of Monte Carlo Calculations of Simple Reactor Physics Problems Coded for the GPU/CUDA Environment,” Proceedings of International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2011), Rio de Janeiro, Brazil, May 8-12, 2011. [pdf]
back to top

2008-2010

  1. Li, Y. and W. Ji, “Pebble Flow Simulation Based on a Multi-Physics Model,” Trans. Am. Nucl. Soc. 103, 323-325 (2010). [pdf]
  2. Liang, C. and W. Ji, “Investigation of Chord Length Sampling Method in Finite 1-D Binary Stochastic Media,” Trans. Am. Nucl. Soc., 103, 338-341 (2010). [pdf]
  3. Ji, W. “Impact of the Stochastic Distribution of Fuel Particles on VHTR Neutronic Analysis,” Trans. Am. Nucl. Soc., 100, 312-314 (2009). [pdf]
  4. Ji, W. and W.R. Martin, “Application of chord length sampling to VHTR unit cell analysis,” Proceedings of International Conference on the Physics of Reactors (PHYSOR08), Interlaken, Switzerland, September 14-19, 2008. [pdf]
back to top