Search Results - "Obabko, A."

Analysis of turbulent flow and thermal structures in low-Prandtl number buoyant flows using direct numerical simulations by Bhushan, S., Elmellouki, M., Walters, D.K., Hassan, Y.A., Merzari, E., Obabko, A.

“…•DNS database for low-Pr flows involving mixed aiding and opposing buoyant flow conditions.•Effect of Re, Pr, and buoyancy on the turbulent flow field and…”
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Jet stability and wall impingement flow field in a thermal striping experiment by Lomperski, S., Obabko, A., Merzari, E., Fischer, P., Pointer, W.D.

“…[Display omitted] •Measured wall impingement velocity and temperature fields in a jet mixing experiment.•A small change in inlet geometry toggled jets from…”
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Assessment of low- and high-fidelity turbulence models for heat transfer predictions in low-prandlt number flows by Bhushan, S., Elmellouki, M., Jamal, T., Busco, G., Walters, D.K., Hassan, Y.A., Merzari, E., Obabko, A.

“…•Comparison of RANS, hybrid RANS/LES and LES model predictions for canonical mixed convective flows.•Comparison of the predictive capability of turbulence…”
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Steady and unsteady calculations on thermal striping phenomena in triple-parallel jet by Yu, Y.Q., Merzari, E., Thomas, J.W., Obabko, A., Aithal, S.M.

“…•Both steady (RANS) and unsteady (URANS, LES) methods were applied to study thermal striping.•The unsteady results exhibited reasonably good agreement with…”
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A Rayleigh instability in a vortex-induced unsteady boundary layer by Cassel, K W, Obabko, A V

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A novel numerical treatment of the near-wall regions in the k−ω class of RANS models by Tomboulides, A., Aithal, S.M., Fischer, P.F., Merzari, E., Obabko, A.V., Shaver, D.R.

“…•Proposed a novel numerical treatment for properly handling the unbound behavior of ω at solid walls.•Developed, implemented and tested an approach for the k−ω…”
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Comparison of experimental and simulation results on interior subchannels of a 61-pin wire-wrapped hexagonal fuel bundle by Goth, N., Jones, P., Nguyen, D.T., Vaghetto, R., Hassan, Y.A., Obabko, A., Merzari, E., Fischer, P.F.

“…•Motivation of sodium fast reactor research presented.•Discussion of experimental facility and measurement methodology.•Discussion of computational…”
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Steady and unsteady calculations on thermal striping phenomena in triple-parallel jet by Yu, Y. Q., Merzari, E., Thomas, J. W., Obabko, A., Aithal, S. M.

“…The phenomenon of thermal striping is encountered in liquid metal cooled fast reactors (LMFR), in which temperature fluctuation due to convective mixing…”
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Steady and unsteady calculations on thermal striping phenomena in triple-parallel jet by Yu, Y. Q., Merzari, E., Thomas, J. W., Obabko, A., Aithal, S. M.

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The influence of horizontal boundaries on Ekman circulation and angular momentum transport in a cylindrical annulus by Obabko, Aleksandr V, Cattaneo, Fausto, F Fischer, Paul

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On the ejection-induced instability in Navier–Stokes solutions of unsteady separation by Obabko, Aleksandr V, Cassel, Kevin W

“…Numerical solutions of the flow induced by a thick-core vortex have been obtained using the unsteady, two-dimensional Navier–Stokes equations. The presence of…”
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