Refereed Journal Publications

Nuclear Reactor Analysis & Methods/Publications/Refereed Journal Publications
  1. Price, D., Folk, T., Duschenes, M., Garikipati, K., Kochunas, B., (2021). Methodology for Sensitivity Analysis of Homogenized Cross-Sections to Instantaneous and Historical Lattice Conditions with Application to AP1000 ® PWR Lattice. Energies, 14(12), 3378. https://doi.org/10.3390/en14123378
  2. Shen, Q., Kochunas, B., Xu, Y., Choi, S., Downar, T., (2021). Transient Multilevel Scheme with One-Group CMFD Acceleration. Nuclear Science and Engineering, 195(7), 741–765. https://doi.org/10.1080/00295639.2020.1866388
  3. Morató, S., Kochunas, B., Miró, R., Verdú, G., Larsen, E.W., Downar, T., (2021). Lambda modes comparison for different approximations of the neutron transport equation: Diffusion, SN and SP3. Annals of Nuclear Energy 154, 108074. https://doi.org/10.1016/j.anucene.2020.108074
  4. Liu, Y., Salko, R., Kim, K.S., Wang, X., Kabelitz, M., Choi, S., Kochunas, B., Collins, B., Martin, W., (2021). Improved MPACT energy deposition and explicit heat generation coupling with CTF. Annals of Nuclear Energy 152, 107999. https://doi.org/10.1016/j.anucene.2020.107999
  5. Jarrett, M.G., Kochunas, B.M., Larsen, E.W., Downar, T.J., (2020). SP3 Limit of the 2D/1D Transport Equations with Varying Degrees of Angular Coupling.  Journal of Computational and Theoretical Transport, 49(6), 303–330. https://doi.org/10.1080/23324309.2020.1819330
  6. Liu, Y., Vaughn, K., Kochunas, B., Downar, T., (2020). Validation of Pin-Resolved Reaction Rates, Kinetics Parameters, and Linear Source MOC in MPACT. Nuclear Science and Engineering, 195(1), 50–68. https://doi.org/10.1080/00295639.2020.1780853
  7. Nguyen, T. N., Jung, Y. S., Downar, T., & Lee, C. (2019). Implementation of the transient fixed-source problem in the neutron transport code PROTEUS-MOC. Annals of Nuclear Energy, 129, 199–206. https://doi.org/10.1016/J.ANUCENE.2019.01.005
  8. Shen, Q., Xu, Y., & Downar, T. (2019). Stability analysis of the CMFD scheme with linear prolongation. Annals of Nuclear Energy, 129, 298–307. https://doi.org/10.1016/J.ANUCENE.2019.02.011
  9. Liu, Y., Kochunas, B., Martin, W., & Downar, T. (2019). Delayed fission energy effect on LWR normal operation and transients. Annals of Nuclear Energy, 128, 84–93. https://doi.org/10.1016/J.ANUCENE.2018.12.048
  10. Fitzgerald, A. P., Kochunas, B., Stimpson, S., & Downar, T. (2019). Spatial decomposition of structured grids for nuclear reactor simulations. Annals of Nuclear Energy, 132, 686–701. https://doi.org/10.1016/J.ANUCENE.2019.06.054
  11. Shen, Q., Wang, Y., Jabaay, D., Kochunas, B., & Downar, T. (2019). Transient analysis of C5G7-TD benchmark with MPACT. Annals of Nuclear Energy, 125, 107–120. https://doi.org/10.1016/J.ANUCENE.2018.10.049
  12. Yee, B. C., Kochunas, B., & Larsen, E. W. (2019). A Multilevel in Space and Energy Solver for 3-D Multigroup Diffusion and Coarse-Mesh Finite Difference Eigenvalue Problems. Nuclear Science and Engineering, 193(7), 722–745. https://doi.org/10.1080/00295639.2018.1562777
  13. Jarrett, M., Kochunas, B., Larsen, E., & Downar, T. (2019). Polar Parity for Efficient Evaluation of Anisotropic Transverse Leakage in the 2D/1D Transport Method. Nuclear Science and Engineering, 193(12), 1291–1309. https://doi.org/10.1080/00295639.2019.1627176
  14. Jarrett, M., Kochunas, B., Larsen, E., & Downar, T. (2018). Improved Accuracy in the 2-D/1-D Method with Anisotropic Transverse Leakage and Cross-Section Homogenization. Nuclear Science and Engineering, 192(3), 219–239. https://doi.org/10.1080/00295639.2018.1507186
  15. Stimpson, S., Collins, B., & Kochunas, B. (2017). Improvement of transport-corrected scattering stability and performance using a Jacobi inscatter algorithm for 2D-MOC. Annals of Nuclear Energy, 105. https://doi.org/10.1016/j.anucene.2017.02.024
  16. Kochunas, B., Fitzgerald, A., & Larsen, E. (2017). Fourier analysis of iteration schemes for k-eigenvalue transport problems with flux-dependent cross sections. Journal of Computational Physics, 345. https://doi.org/10.1016/j.jcp.2017.05.028
  17. Yee, B. C., Kochunas, B., & Larsen, E. W. (2017). A multilevel in space and energy solver for multigroup diffusion eigenvalue problems. Nuclear Engineering and Technology, 49(6). https://doi.org/10.1016/j.net.2017.07.014
  18. Kochunas, B., Collins, B., Stimpson, S., Salko, R., Jabaay, D., Graham, A., … Gehin, J. (2017). VERA Core Simulator Methodology for Pressurized Water Reactor Cycle Depletion. Nuclear Science and Engineering, 185(1), 217–231. https://doi.org/10.13182/NSE16-39
  19. Zhu, A., Kochunas, B., Xu, Y., Jarrett, M., Larsen, E., & Downar, T. (2017). Theoretical convergence rate lower bounds for variants of coarse mesh finite difference to accelerate neutron transport calculations. Nuclear Science and Engineering, 186(3). https://doi.org/10.1080/00295639.2017.1293408
  20. Yee, B. C., Kochunas, B., Larsen, E. W., & Xu, Y. (2017). Space-dependent Wielandt shifts for multigroup diffusion eigenvalue problems. Nuclear Science and Engineering, 188(2), 140–159. https://doi.org/10.1080/00295639.2017.1350001
  21. Zhu, A., Jarrett, M., Xu, Y., Kochunas, B., Larsen, E., & Downar, T. (2016). An optimally diffusive Coarse Mesh Finite Difference method to accelerate neutron transport calculations. Annals of Nuclear Energy, 95. https://doi.org/10.1016/j.anucene.2016.05.004
  22. Collins, B., Stimpson, S., Kelley, B. W., Young, M. T. H., Kochunas, B., Graham, A., … Godfrey, A. (2016). Stability and accuracy of 3D neutron transport simulations using the 2D/1D method in MPACT. Journal of Computational Physics, 326. https://doi.org/10.1016/j.jcp.2016.08.022
  23. Jarrett, M., Kochunas, B., Zhu, A., & Downar, T. (2016). Analysis of stabilization techniques for CMFD acceleration of neutron transport problems. Nuclear Science and Engineering, 184(2). https://doi.org/10.13182/NSE16-51
  24. Liu, Z., Collins, B., Kochunas, B., Downar, T., Xu, Y., & Wu, H. (2015). Theory and analysis of accuracy for the method of characteristics direction probabilities with boundary averaging. Annals of Nuclear Energy, 77. https://doi.org/10.1016/j.anucene.2014.11.016
  25. Cao, L., Gerlach, A., Xu, Y., Downar, T., & Lee, J. C. (2015). Neutronics modeling of the SPERT III E-Core critical experiments with MPACT and KENO. Annals of Nuclear Energy, 80, 207–218. https://doi.org/10.1016/J.ANUCENE.2015.02.013
  26. Liu, Z., Kochunas, B., Collins, B., Downar, T., Xu, Y., & Wu, H. (2015). Model and analysis of performance for the method of characteristics direction probabilities with boundary averaging. Progress in Nuclear Energy, 80. https://doi.org/10.1016/j.pnucene.2014.12.004
  27. Zou, L., Zhang, H., Gehin, J., & Kochunas, B. (2013). Coupled Thermal-Hydraulic/Neutronics/Crud Framework in Prediction of Crud-Induced Power Shift Phenomenon. Nuclear Technology, 183(3), 5. https://doi.org/10.13182/NT13-A19440
  28. Hursin, M., Downar, T. J., & Kochunas, B. (2012). Analysis of the core power response during a PWR rod ejection transient using the PARCS nodal code and the DeCART MOC code. Nuclear Science and Engineering, 170(2). https://doi.org/10.13182/NSE10-75