Large-eddy simulations of turbulent flow for grid-to-rod fretting in nuclear reactors
, 2013 The grid-to-rod fretting (GTRF) problem in pressurized water reactors is a flow-induced vibration problem that results in wear and failure of the fuel rods in nuclear assemblies.
Bakosi, J. +4 more
core +1 more source
Assessment of RANS turbulence models and Zwart cavitation model empirical coefficients for the simulation of unsteady cloud cavitation [PDF]
, 2019 The numerical simulation of unsteady cavitation flows is sensitive to the selected models and associated parameters. Consequently, three Reynolds Average Navier-Stokes (RANS) turbulence models and the Zwart cavitation model were selected to assess their ...
Escaler Puigoriol, Francesc Xavier +1 more
core +2 more sources
Verification of Boundary Conditions Applied to Active Flow Circulation Control
Aerospace, 2019 Inclusion of Active Flow Control (AFC) into Computational Fluid Dynamics (CFD) simulations is usually highly time-consuming and requires extensive computational resources and effort.
Petr Vrchota +2 more
doaj +1 more source
Vorticity-transport and unstructured RANS investigation of rotor-fuselage interactions [PDF]
, 2009 The prediction capabilities of unstructured primitive-variable and vorticity-transport-based Navier-Stokes solvers have been compared for rotorcraft-fuselage interaction.
Brown, Richard +3 more
core
Adaptive Embedded LES of the NASA Hump [PDF]
A scheme for adaptive embedded LES is proposed which automatically determines boundaries for LES regions in a hybrid LES-RANS computation, with the goal of minimizing the LES part of the computation for maximum accuracy with minimum cost.
Spalart P., Version V, Woodruff S. L.
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Modelling and Simulation of Effusion Cooling—A Review of Recent Progress
EnergiesEffusion cooling is often regarded as one of the critical techniques to protect solid surfaces from exposure to extremely hot environments, such as inside a combustion chamber where temperature can well exceed the metal melting point.
Hao Xia +2 more
doaj +1 more source
Научный вестник МГТУ ГА, 2016 The article describes the possibility of implementing the open source CFD software package OpenFOAM for aerodynamic characteristics calculation of aircraft taking into account the local turbulence flows.
A. S. Epikhin, V. T. Kalugin
doaj
Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations
AerospaceModeling of wall-bounded turbulent flows, in particular the hybridization of the Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation (LES) methods, has faced serious questions for decades.
Stefan Heinz
doaj +1 more source
Sub-grid modelling for two-dimensional turbulence using neural networks [PDF]
, 2018 In this investigation, a data-driven turbulence closure framework is introduced and deployed for the sub-grid modelling of Kraichnan turbulence. The novelty of the proposed method lies in the fact that snapshots from high-fidelity numerical data are used
Maulik, Romit +3 more
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Hybrid RANS/LES of plane jets impinging on a flat plate at small nozzle-plate distances [PDF]
, 2012 A k-omega BASED HYBRID RANS/LES (Reynolds-averaged Navier-Stokes/large eddy simulation) model is tested for simulation of plane impinging jets at various nozzle-plate distances (H/B), where H is the distance and B is the slot's width) and various ...
Degroote, Joris +4 more
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