Maria Avramova

Vaglio-Gaudard, C., Destouches, C., Hawari, A., Avramova, M., Ivanov, K., Valentine, T., … Hudelot, J.-P. (2023). Challenge for the validation of high-fidelity multi-physics LWR modeling and simulation: Development of new experiments in research reactors. FRONTIERS IN ENERGY RESEARCH, 11. https://doi.org/10.3389/fenrg.2023.1110979

Takasugi, C., Aly, A., Holler, D., Abarca, A., Beeler, B., Avramova, M., & Ivanov, K. (2023). Development of an efficient and improved core thermal-hydraulics predictive capability for fast reactors: Summary of research and development activities at the North Carolina state University. NUCLEAR ENGINEERING AND DESIGN, 412. https://doi.org/10.1016/j.nucengdes.2023.112474

Faure, Q., Delipei, G., Petruzzi, A., Avramova, M., & Ivanov, K. (2023). Fuel performance uncertainty quantification and sensitivity analysis in the presence of epistemic and aleatoric sources of uncertainties. FRONTIERS IN ENERGY RESEARCH, 11. https://doi.org/10.3389/fenrg.2023.1112978

Takasugi, C., Martin, N., Laboure, V., Ortensi, J., Ivanov, K., & Avramova, M. (2023). Preservation of kinetics parameters generated by Monte Carlo calculations in two-step deterministic calculations. EPJ NUCLEAR SCIENCES & TECHNOLOGIES, 9. https://doi.org/10.1051/epjn/2022056

Aly, A., Beeler, B., & Avramova, M. (2022). Ab initio molecular dynamics investigation of gamma-(U,Zr) structural and thermal properties as a function of temperature and composition. JOURNAL OF NUCLEAR MATERIALS, 561. https://doi.org/10.1016/j.jnucmat.2022.153523

Delipei, G. K., Rouxelin, P., Abarca, A., Hou, J., Avramova, M., & Ivanov, K. (2022). CTF-PARCS Core Multi-Physics Computational Framework for Efficient LWR Steady-State, Depletion and Transient Uncertainty Quantification. ENERGIES, 15(14). https://doi.org/10.3390/en15145226

Salko, R., Wysocki, A., Blyth, T., Toptan, A., Hu, J., Kumar, V., … Pilch, M. (2022). CTF: A modernized, production-level, thermal hydraulic solver for the solution of industry-relevant challenge problems in pressurized water reactors. NUCLEAR ENGINEERING AND DESIGN, 397. https://doi.org/10.1016/j.nucengdes.2022.111927

Lin, L., Athe, P., Rouxelin, P., Avramova, M., Gupta, A., Youngblood, R., … Dinh, N. (2022). Digital-twin-based improvements to diagnosis, prognosis, strategy assessment, and discrepancy checking in a nearly autonomous management and control system. ANNALS OF NUCLEAR ENERGY, 166. https://doi.org/10.1016/j.anucene.2021.108715

Altahhan, M. R., Geemert, R., Avramova, M., & Ivanov, K. (2022). Extending a low-order inhomogeneous adjoint equations model to a higher-order model with verification on integral applications. ANNALS OF NUCLEAR ENERGY, 177. https://doi.org/10.1016/j.anucene.2022.109277

Aly, A., Beeler, B., & Avramova, M. (2022). Investigation of ?-(U, Zr) structural properties and its interfacial properties with liquid sodium using ab initio molecular dynamics. JOURNAL OF NUCLEAR MATERIALS, 567. https://doi.org/10.1016/j.jnucmat.2022.153835

Casamor, M., Avramova, M., Reventos, F., & Freixa, J. (2022). Off-line vs. semi-implicit TH-TH coupling schemes: A BEPU comparison. ANNALS OF NUCLEAR ENERGY, 178. https://doi.org/10.1016/j.anucene.2022.109344

Rouxelin, P., Alfonsi, A., Strydom, G., Avramova, M., & Ivanov, K. (2022). Propagation of VHTRC manufacturing uncertainties with RAVEN/PHISICS. ANNALS OF NUCLEAR ENERGY, 165. https://doi.org/10.1016/j.anucene.2021.108667

Altahhan, M. R., Geemert, R., Avramova, M., & Ivanov, K. (2021). Development and verification of a higher-order mathematical adjoint nodal diffusion solver. ANNALS OF NUCLEAR ENERGY, 163. https://doi.org/10.1016/j.anucene.2021.108548

Delipei, G. K., Hou, J., Avramova, M., Rouxelin, P., & Ivanov, K. (2021). Summary of comparative analysis and conclusions from OECD/NEA LWR-UAM benchmark Phase I. NUCLEAR ENGINEERING AND DESIGN, 384. https://doi.org/10.1016/j.nucengdes.2021.111474

Avramova, M. (2020, March). Developments in thermal-hydraulic sub-channel modeling for whole core multi-physics simulations. NUCLEAR ENGINEERING AND DESIGN, Vol. 358. https://doi.org/10.1016/j.nucengdes.2019.110387

Balestra, P., Henry, K., Carlyon, C., English, C., Myer, J., Avramova, M., … Strydom, G. (2020). Modular high temperature gas reactor core modeling with RELAP5-3D/ PHISICS ? Optimization schemes for load following. NUCLEAR ENGINEERING AND DESIGN, 362. https://doi.org/10.1016/j.nucengdes.2020.110526

Toptan, A., Salko, R. K., Avramova, M. N., Clarno, K., & Kropaczek, D. J. (2019). A new fuel modeling capability, CTFFuel, with a case study on the fuel thermal conductivity degradation. NUCLEAR ENGINEERING AND DESIGN, 341, 248–258. https://doi.org/10.1016/j.nucengdes.2018.11.010

Bennett, A., Martin, N., & Avramova, M. (2019). A surrogate model based on sparse grid interpolation for boiling water reactor subchannel void distribution. ANNALS OF NUCLEAR ENERGY, 131, 51–62. https://doi.org/10.1016/j.anucene.2019.03.022

Porter, N. W., Mousseau, V. A., & Avramova, M. N. (2019). CTF-R: A novel residual-based thermal hydraulic solver. NUCLEAR ENGINEERING AND DESIGN, 348, 37–45. https://doi.org/10.1016/j.nucengdes.2019.04.006

Toptan, A., Kropaczek, D. J., & Avramova, M. N. (2019). Gap conductance modeling I: Theoretical considerations for single- and multi-component gases in curvilinear coordinates. NUCLEAR ENGINEERING AND DESIGN, 353. https://doi.org/10.1016/j.nucengdes.2019.110283

Toptan, A., Kropaczek, D. J., & Avramova, M. N. (2019). Gap conductance modeling II: Optimized model for UO2-Zircaloy interfaces. NUCLEAR ENGINEERING AND DESIGN, 355. https://doi.org/10.1016/j.nucengdes.2019.110289

Toptan, A., Kropaczek, D. J., & Avramova, M. N. (2019). On the validity of the dilute gas assumption for gap conductance calculations in nuclear fuel performance codes. NUCLEAR ENGINEERING AND DESIGN, 350, 1–8. https://doi.org/10.1016/j.nucengdes.2019.04.042

Porter, N. W., Mousseau, V. A., & Avramova, M. N. (2019, December 2). Quantified Validation with Uncertainty Analysis for Turbulent Single-Phase Friction Models. NUCLEAR TECHNOLOGY, Vol. 205, pp. 1607–1617. https://doi.org/10.1080/00295450.2018.1548221

Gosdin, C., & Avramova, M. (2018). Application of sub-channel modeling to BWR core analysis. ANNALS OF NUCLEAR ENERGY, 115, 294–302. https://doi.org/10.1016/j.anucene.2018.02.005

Li, Q., Avramova, M., Jiao, Y., Chen, P., Yu, J., Pu, Z., & Chen, J. (2018). CFD prediction of critical heat flux in vertical heated tubes with uniform and non-uniform heat flux. NUCLEAR ENGINEERING AND DESIGN, 326, 403–412. https://doi.org/10.1016/j.nucengdes.2017.11.009

Toptan, A., Porter, N. W., Salko, R. K., & Avramova, M. N. (2018). Implementation and assessment of wall friction models for LWR core analysis. ANNALS OF NUCLEAR ENERGY, 115, 565–572. https://doi.org/10.1016/j.anucene.2018.02.022

Mankosa, M., & Avramova, M. (2018). Three-dimensional multi-physics modeling of hydrogen and hydride distribution in zirconium alloy cladding. PROGRESS IN NUCLEAR ENERGY, 105, 294–300. https://doi.org/10.1016/j.pnucene.2018.02.012

Porter, N. W., Avramova, M. N., & Mousseau, V. A. (2018). Uncertainty Quantification Study of CTF for the OECD/NEA LWR Uncertainty Analysis in Modeling Benchmark. NUCLEAR SCIENCE AND ENGINEERING, 190(3), 271–286. https://doi.org/10.1080/00295639.2018.1435135

Porter, N. W., & Avramova, M. N. (2018). Validation of CTF pressure drop and void predictions for the NUPEC BWR database. NUCLEAR ENGINEERING AND DESIGN, 337, 291–299. https://doi.org/10.1016/j.nucengdes.2018.07.018

Raja, F., Mankosa, M., & Avramova, M. (2017). Comparative analysis of different fidelity fuel performance models for fuel temperature predictions. NUCLEAR ENGINEERING AND DESIGN, 322, 464–473. https://doi.org/10.1016/j.nucengdes.2017.07.025

Raja, F., & Avramova, M. (2017). Evaluation of modeling options for in-pellet power distribution and gap gas conductance for accurate fuel temperature predictions. PROGRESS IN NUCLEAR ENERGY, 100, 135–145. https://doi.org/10.1016/j.pnucene.2017.06.005

Davis, I., Courty, O., Avramova, M., & Motta, A. (2017). High-fidelity multi-physics coupling for determination of hydride distribution in Zr-4 cladding. ANNALS OF NUCLEAR ENERGY, 110, 475–485. https://doi.org/10.1016/j.anucene.2017.06.049

Yilmaz, M. O., Avramova, M. N., & Andersen, J. G. M. (2017). Multi-physics code system with improved feedback modeling. PROGRESS IN NUCLEAR ENERGY, 98, 94–108. https://doi.org/10.1016/j.pnucene.2017.03.007

Bennett, A., Avramova, M., & Ivanov, K. (2016). Coupled MCNP6/CTF code: Development, testing, and application. ANNALS OF NUCLEAR ENERGY, 96, 1–11. https://doi.org/10.1016/j.anucene.2016.05.008

Yilmaz, M. O., Avramova, M. N., & Andersen, J. G. M. (2016). Development, verification, and validation of a fuel thermal conductivity degradation model in CTF. ANNALS OF NUCLEAR ENERGY, 97, 246–261. https://doi.org/10.1016/j.anucene.2016.07.020

Yilmaz, M. O., Avramova, M. N., & Andersen, J. G. M. (2016). Impact of fuel thermal conductivity degradation on Doppler feedback during rod ejection accident. NUCLEAR ENGINEERING AND DESIGN, 307, 339–353. https://doi.org/10.1016/j.nucengdes.2016.07.021

Magedanz, J., Avramova, M., Perin, Y., & Velkov, A. K. (2015). High-fidelity multi-physics system TORT-TD/CTF/FRAPTRAN for light water reactor analysis. Annals of Nuclear Energy, 84, 234–243. https://doi.org/10.1016/J.ANUCENE.2015.01.033

Avramova, M., Ivanov, K., Kozlowski, T., Pasichnyk, I., Zwermann, W., Velkov, K., … Gulliford, J. (2015). Multi-physics and multi-scale benchmarking and uncertainty quantification within OECD/NEA framework. Annals of Nuclear Energy, 84, 178–196. https://doi.org/10.1016/J.ANUCENE.2014.12.014

Salko, R. K., Schmidt, R. C., & Avramova, M. N. (2015). Optimization and parallelization of the thermal–hydraulic subchannel code CTF for high-fidelity multi-physics applications. Annals of Nuclear Energy, 84, 122–130. https://doi.org/10.1016/J.ANUCENE.2014.11.005

Rosenkrantz, A., Avramova, M., Ivanov, K., Prinsloo, R., Botes, D., & Elsakhawy, K. (2014). Coupled 3D neutronics/thermal hydraulics modeling of the SAFARI-1 MTR. Annals of Nuclear Energy, 73, 122–130. https://doi.org/10.1016/J.ANUCENE.2014.06.018

Biery, M., & Avramova, M. (2014). Investigations on coupled code PWR simulations using COBRA-TF with soluble boron tracking model. Progress in Nuclear Energy, 77, 72–83. https://doi.org/10.1016/J.PNUCENE.2014.06.005

Ozdemir, O. E., Avramova, M. N., & Sato, K. (2014). Multi-dimensional boron transport modeling in subchannel approach: Part I. Model selection, implementation and verification of COBRA-TF boron tracking model. Nuclear Engineering and Design, 278, 701–712. https://doi.org/10.1016/J.NUCENGDES.2013.02.031

Ozdemir, O. E., & Avramova, M. N. (2014). Multi-dimensional boron transport modeling in subchannel approach: Part II. Validation of CTF boron tracking model and adding boron precipitation model. Nuclear Engineering and Design, 278, 713–722. https://doi.org/10.1016/J.NUCENGDES.2014.08.003

Clifford, I., Ivanov, K. N., & Avramova, M. N. (2013). A multi-scale homogenization and reconstruction approach for solid material temperature calculations in prismatic high temperature reactor cores. Nuclear Engineering and Design, 256, 1–13. https://doi.org/10.1016/j.nucengdes.2012.11.016

Espel, F. P., Avramova, M. N., Ivanov, K. N., & Misu, S. (2013). New developments of the MCNP/CTF/NEM/NJOY code system – Monte Carlo based coupled code for high accuracy modeling. Annals of Nuclear Energy, 51, 18–26. https://doi.org/10.1016/j.anucene.2012.06.031

Salko, R. K., & Avramova, M. N. (2013). Uncertainty analysis of sub-channel code calculated ONB wall superheat in rod bundle experiments using the GRS methodology. Progress in Nuclear Energy, 65, 42–49. https://doi.org/10.1016/J.PNUCENE.2013.02.003

Avramova, M. N., & Ivanov, K. N. (2010). Verification, validation and uncertainty quantification in multi-physics modeling for nuclear reactor design and safety analysis. Progress in Nuclear Energy, 52(7), 601–614. https://doi.org/10.1016/j.pnucene.2010.03.009

Ivanov, K., & Avramova, M. (2007). Challenges in coupled thermal–hydraulics and neutronics simulations for LWR safety analysis. Annals of Nuclear Energy, 34(6), 501–513. https://doi.org/10.1016/j.anucene.2007.02.016

Cuervo, D., Avramova, M., Ivanov, K., & Miró, R. (2006). Evaluation and enhancement of COBRA-TF efficiency for LWR calculations. Annals of Nuclear Energy, 33(9), 837–847. https://doi.org/10.1016/j.anucene.2006.03.011