Hybrid RANS/LES computation of plane impinging jet flow
Archives of Mechanics, 2011 Flow characteristics are presented of simulation results of plane impinging jets at high nozzle-plate distances, with two k-ω based hybrid RANS/LES (Reynolds Averaged Navier–Stokes/Large–Eddy Simulation) models and a k-ω RANS model. The first hybrid RANS/
S. Kubacki, J. Rokicki, E. Dick
doaj +1 more source
Fluids, 2018 In the current study, a comparative study is performed using Large Eddy Simulation (LES) and Reynolds-averaged Navier–Stokes (RANS) turbulence models on a natural gas/diesel Reactivity Controlled Compression Ignition (RCCI) engine.
Amir-Hasan Kakaee +2 more
doaj +1 more source
Numerical study of crude oil batch mixing in a long channel
Petroleum Science, 2018 The main objective of this work is to predict the mixing of two different miscible oils in a very long channel. The background to this problem relates to the mixing of heavy and light oil in a pipeline.
H. Sepehr +3 more
doaj +1 more source
Fluids, 2021 The design of wind turbines requires a deep insight into their complex aerodynamics, such as dynamic stall of a single airfoil and flow vortices. The calculation of the aerodynamic forces on the wind turbine blade at different angles of attack (AOAs) is ...
Samuel Mitchell +2 more
doaj +1 more source
On the prospects of improving the numerical analysis of symmetric airfoils at low Reynolds numbers and high angles of attack by a LES approach: the case of NACA0021 profile [PDF]
E3S Web of Conferences, 2020 The working conditions of airfoils along modern wind turbine blades are putting new focus on the importance of properly characterizing the aerodynamic performance of different airfoil families also at high angles of attack (AoAs) beyond stall and at ...
Giaccherini Simone +4 more
doaj +1 more source
RANS and hybrid LES/RANS simulations of flow over a square cylinder
Advances in Aerodynamics, 2019 Unsteady RANS (URANS), hybrid LES/RANS and IDDES simulations were conducted to numerically investigate the velocity field around, and pressures distribution and forces over a square cylinder immersed in a uniform, steady oncoming flow with Reynolds ...
Jianghua Ke
doaj +1 more source
Camprarison of different Turbulent Modeling on Rotating Airfoil with Corolios and centrifugal accelaration [PDF]
مجله مدل سازی در مهندسی, 2000 The blades moving in a circular path have many industrial applications, these include their use in some turbomachines. In more modern turbo machines, such as jet engine compressors, the flow conditions are completely incompressible.
Iraj Fazeli Farsani, Bahman Asadi
doaj +1 more source
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
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
Simulation Study on Impacts of Viaduct Height on Pollutant Dispersion in Street Canyons Using LES and RANS Models [PDF]
Journal of Applied Fluid MechanicsTo assess the impact of different heights of the viaduct on air pollutant dispersion and the prediction accuracy of pollutant concentration in urban street canyons, simulation results based on LES and RANS models are analyzed.
R. Xu +4 more
doaj +1 more source