Results 21 to 30 of about 11,201 (183)
Wall-Modeled and Hybrid Large-Eddy Simulations of the Flow over Roughness Strips
Fluids, 2022 The flow over alternating roughness strips oriented normally to the mean stream is studied using wall-modeled large-eddy simulations (WMLES) and improved delayed detached-eddy simulations (IDDES) (a hybrid method solving the Reynolds-averaged Navier ...
Teresa Salomone +2 more
doaj +1 more source
Computational Modelling of Wing Downwash Profile with Reynolds-Averaged and Delayed Detached-Eddy Simulations [PDF]
, 2017 This paper describes the computational model to predict downwash for a conventional fixed wing configuration at flight scales (ReMAC = 2.26 × 107 ). The lack of resolution in the downwash wake region resulted in an over-dissipation of the turbulent ...
Srigrarom, Sutthiphong +2 more
core +1 more source
Scale-adaptive simulation of unsteady cavitation around a naca66 hydrofoil [PDF]
, 2019 Distances between consecutive aftershocks are analysed by means of mono- and multifractal theory with the aim of quantifying the complexity of the physical mechanism governing them, as well as their predictability and predictive instability.
Escaler Puigoriol, Francesc Xavier +3 more
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On Interface Issues in LES/RANS Coupling Strategies: A Method for Turbulence Forcing
Journal of Fluid Science and Technology, 2011 The present work deals with a computational strategy coupling near-wall, eddyviscosity-based RANS models with LES within a zonal Hybrid LES/RANS (HLR) framework. Key questions concerning the coupling of both methods, the inherently steady RANS method and
Suad JAKIRLIC +2 more
doaj +1 more source
Assessment of hybrid RANS-LES methods for accurate automotive aerodynamic simulations
Journal of Wind Engineering and Industrial Aerodynamics, 2020 The introduction of the Harmonized Light Vehicles Test Procedure causes a significant challenge for the automotive industry, as it increases the importance of efficient aerodynamics and demands how variations of optional extras affect the car’s fuel consumption and emissions.
Ekman, Petter +3 more
openaire +2 more sources
Computational study of a complex three-dimensional shock boundary-layer interaction [PDF]
, 2015 Shock boundary–layer interactions occur in many high-speed aerodynamic flows and they can have a notable impact on design considerations due to the aerodynamic and heat transfer effects.
Katzenberg, Joshua, MacManus, David G.
core +2 more sources
FluidsThe Terra Incognita (or gray-zone) problem seen in atmospheric flow simulations causes serious consequences: it implies, e.g., significantly incorrect flow predictions and results that often simply depend on flow simulation settings as the computational ...
Stefan Heinz
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Hybrid RANS/LES method for wind flow over complex terrain
Wind Energy, 2009 AbstractThe use of Large Eddy Simulation (LES) to predict wall‐bounded flows has presently been limited to low Reynolds number flows. Since the number of computational grid points required to resolve the near‐wall turbulent structures increase rapidly with Reynolds number, LES has been unattainable for flows at high Reynolds numbers.
A. Bechmann, N. N. Sørensen
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Direct numerical simulation of backward-facing step flow at Ret = 395 and expansion ratio 2 [PDF]
, 2019 Backward-facing step (BFS) constitutes a canonical configuration to study wallbounded flows subject to massive expansions produced by abrupt changes in geometry.
Gorobets, Andrei +3 more
core +2 more sources
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
doaj +1 more source