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Proceedings Papers

Results of a LES Application to LBE Turbulent Flow in a Wire-Wrapped Single Rod Channel

Andrea Pucciarelli
Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T08A003, August 4–6, 2021
Paper No: ICONE28-64153
https://doi.org/10.1115/ICONE28-64153
... for the development and tuning of RANS turbulence models specialized in addressing operating conditions involving liquid-metals: the distributions of the turbulent heat fluxes (THF) is here particularly taken into account. liquid metals LES RANS Proceedings of the 2021 28th International Conference...
View Paper titled, Results of a LES Application to LBE Turbulent Flow in a Wire-Wrapped Single Rod Channel
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Topics: Liquid metals, Reynolds-averaged Navier–Stokes equations, Turbulence, Wire, Fluids, Eutectic alloys, Flux (Metallurgy), Fuel rods, Heat, Heat flux
Proceedings Papers

Applicability of Dynamic Modeling for Turbulent Schmidt and Prandtl Numbers on Density Stratification Breakup in Several Flow Conditions

Satoshi Abe, Etienne Studer, Masahiro Ishigaki, Yasuteru Sibamoto, Taisuke Yonomoto
Proc. ASME. ICONE2020, Volume 3: Student Paper Competition; Thermal-Hydraulics; Verification and Validation, V003T13A049, August 4–5, 2020
Paper No: ICONE2020-16837
https://doi.org/10.1115/ICONE2020-16837
... the predictability of the RANS (Reynolds-averaged Navier Stokes) approach, we implemented the dynamic modeling for turbulent Schmidt Sc t and Prandtl Pr t numbers. In this paper, the capability of the RANS analysis with dynamic Sc t modeling is assessed with several experimental data obtained by using the MISTRA...
View Paper titled, Applicability of Dynamic Modeling for Turbulent Schmidt and Prandtl Numbers on Density Stratification Breakup in Several Flow Conditions
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Topics: Density, Dynamic modeling, Flow (Dynamics), Hydrogen, Reynolds-averaged Navier–Stokes equations, Turbulence
Proceedings Papers

RANS and LES Investigations of Vertical Flows in the Fuel Passages of Gas-Cooled Nuclear Reactors

Amir Keshmiri, Mark A. Cotton, Yacine Addad, Stefano Rolfo, Flavien Billard
Proc. ASME. ICONE16, Volume 2: Fuel Cycle and High Level Waste Management; Computational Fluid Dynamics, Neutronics Methods and Coupled Codes; Student Paper Competition, 297-306, May 11–15, 2008
Paper No: ICONE16-48372
https://doi.org/10.1115/ICONE16-48372
...% of those in the corresponding forced convection case. The heat transfer performance of such ‘mixed’ convection flows is investigated here using a range of refined Reynolds-Averaged-Navier-Stokes (RANS) turbulence models. While all belong to the broad class of Eddy Viscosity Models (EVMs), the various RANS...
View Paper titled, <span class="search-highlight">RANS</span> and LES Investigations of Vertical Flows in the Fuel Passages of Gas-Cooled Nuclear Reactors
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Topics: Eddies (Fluid dynamics), Flow (Dynamics), Fuels, Mixed convection, Nuclear reactors, Reynolds-averaged Navier–Stokes equations, Viscosity