Results 61 to 70 of about 13,803 (197)
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
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Unsteady CFD Analysis of a Delta Wing Fighter Configuration by Delayed Detached Eddy Simulation [PDF]
, 2008 While the flow physics of generic delta wings with sharp leading edges are largely understood, realistic configurations with rounded leading edges and canards are still of scientific and industrial interest.
Leicher, S., Lüdeke, H.
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Continuous Eddy Simulation (CES) of Transonic Shock-Induced Flow Separation
Applied SciencesReynolds-averaged Navier–Stokes (RANS), large eddy simulation (LES), and hybrid RANS-LES, first of all wall-modeled LES (WMLES) and detached eddy simulation (DES) methods, are regularly applied for wall-bounded turbulent flow simulations.
Adeyemi Fagbade, Stefan Heinz
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RANS and Hybrid RANS-LES Simulations of an H-Type Darrieus Vertical Axis Water Turbine
Energies, 2018 Nowadays, the global energy crisis has encouraged the use of alternative sources like the energy available in the water currents of seas and rivers.
Omar D. Lopez Mejia +2 more
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Model-Invariant Hybrid RANS-LES Computations on Unstructured Meshes [PDF]
Hybrid RANS-LES computations combine the bene ts of RANS and LES so that LES is used in regions where the accuracy of RANS deteriorates. The numerous hybrid approaches are limited by the speci cation of the LES-RANS interface, which can cause nonphysical
Sreekanth, R., Woodruff, Stephen L.
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, 2018 This study numerically explores the flow physics associated with nanosecond pulsed plasma actuators to control shock-wave induced boundary-layer separation.
Kinefuchi, Kiyoshi +2 more
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Towards Efficient Hybrid RANS–LES for Industrial Aeronautical Applications
Flow, Turbulence and CombustionAbstract Three complementary approaches for reducing the grid-resolution requirements in hybrid RANS–LES computations, namely (a) the use of wall functions, (b) the application of locally embedded WMLES instead of global WMLES, as well as (c) local grid adaptation in LES regions, are assessed for different test cases up to an industry ...
Probst, Axel +4 more
openaire +3 more sources
A New Formulation for Hybrid LES-RANS Computations [PDF]
Ideally, a hybrid LES-RANS computation would employ LES only where necessary to make up for the failure of the RANS model to provide sufficient accuracy or to provide time-dependent information.
Woodruff, Stephen L.
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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
Strategies for RANS/VMS-LES coupling
, 2006 A new hybrid RANS/LES approach is proposed. The key feature of this approach is a blending between two eddy-viscosities, one given by the $k-\varepsilon$ RANS model and the other by the Smagorinsky VMS-LES (variational multiscale LES) closure.
Camarri, Simone +4 more
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