Aleksandr Obabko
Aleksandr Obabko
Assistant Computational Scientist
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On the strong scaling of the spectral element solver Nek5000 on petascale systems
N Offermans, O Marin, M Schanen, J Gong, P Fischer, P Schlatter, ...
Proceedings of the Exascale Applications and Software Conference 2016, 1-10, 2016
Characterization of the secondary flow in hexagonal ducts
O Marin, R Vinuesa, AV Obabko, P Schlatter
Physics of Fluids 28 (12), 2016
Large-scale large eddy simulation of nuclear reactor flows: Issues and perspectives
E Merzari, A Obabko, P Fischer, N Halford, J Walker, A Siegel, Y Yu
Nuclear Engineering and Design 312, 86-98, 2017
High-resolution coupled physics solvers for analysing fine-scale nuclear reactor design problems
VS Mahadevan, E Merzari, T Tautges, R Jain, A Obabko, M Smith, ...
Philosophical Transactions of the Royal Society A: Mathematical, Physical …, 2014
Toward exascale: overview of large eddy simulations and direct numerical simulations of nuclear reactor flows with the spectral element method in Nek5000
E Merzari, P Fischer, M Min, S Kerkemeier, A Obabko, D Shaver, H Yuan, ...
Nuclear Technology 206 (9), 1308-1324, 2020
Navier–Stokes solutions of unsteady separation induced by a vortex
AV Obabko, KW Cassel
Journal of Fluid Mechanics 465, 99-130, 2002
Efficient exascale discretizations: High-order finite element methods
T Kolev, P Fischer, M Min, J Dongarra, J Brown, V Dobrev, T Warburton, ...
The International Journal of High Performance Computing Applications 35 (6 …, 2021
A novel numerical treatment of the near-wall regions in the k− ω class of RANS models
A Tomboulides, SM Aithal, PF Fischer, E Merzari, AV Obabko, DR Shaver
International Journal of Heat and Fluid Flow 72, 186-199, 2018
Nek5000: User’s manual
P Fischer, J Lottes, S Kerkemeier, O Marin, K Heisey, A Obabko, ...
Argonne National Laboratory, Lemont, IL, Technical Report No. ANL/MCS-TM-351, 2015
Accurate prediction of the wall shear stress in rod bundles with the spectral element method at high Reynolds numbers
J Walker, E Merzari, A Obabko, P Fischer, A Siegel
International journal of heat and fluid flow 50, 287-299, 2014
The lnfluence of a Moving Wall on Unsteady Separation
KW Cassel, AV Obabko
Proceedings of 37th Aerospace Sciences Meeting and Exhibit, AIAA Paper 99-1005, 1999
Comparison of experimental and simulation results on interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle
N Goth, P Jones, DT Nguyen, R Vaghetto, YA Hassan, A Obabko, ...
Nuclear Engineering and Design 338, 130-136, 2018
CFD validation in OECD/NEA t-junction benchmark.
AV Obabko, PF Fischer, TJ Tautges, S Karabasov, VM Goloviznin, ...
Argonne National Lab.(ANL), Argonne, IL (United States), 2011
Spectral element applications in complex nuclear reactor geometries: Tet-to-hex meshing
H Yuan, MA Yildiz, E Merzari, Y Yu, A Obabko, G Botha, G Busco, ...
Nuclear Engineering and design 357, 110422, 2020
Verification and Validation of Nek5000 for T-junction, Matis, SIBERIA, and Max Experiments
A Obabko, P Fischer, O Marin, E Merzari, D Pointer
Internation Conference on Nuclear Reactor Thermal Hydrualics 31, 2015
CFD benchmark for a heavy liquid metal fuel assembly
H Doolaard, A Shams, F Roelofs, K Van Tichelen, S Keijers, J De Ridder, ...
16th International Topical Meeting on Nuclear Reactor Thermal Hydraulics …, 2015
Wall resolved large eddy simulation of reactor core flows with the spectral element method
E Merzari, A Obabko, P Fischer, M Aufiero
Nuclear Engineering and Design 364, 110657, 2020
A porous medium model for predicting the duct wall temperature of sodium fast reactor fuel assembly
Y Yu, E Merzari, A Obabko, J Thomas
Nuclear Engineering and Design 295, 48-58, 2015
High-fidelity simulation of flow-induced vibrations in helical steam generators for small modular reactors
E Merzari, H Yuan, A Kraus, A Obabko, P Fischer, J Solberg, S Lee, J Lai, ...
Nuclear Technology 205 (1-2), 33-47, 2019
Large eddy simulation of thermo-hydraulic mixing in a T-Junction
AV Obabko, PF Fischer, TJ Tautges, VM Goloviznin, MA Zaytsev, ...
Nuclear Reactor Thermal Hydraulics and Other Applications 25, 2012
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