Results 41 to 50 of about 13,803 (197)

Hybrid RANS/LES of flow in a rib-roughened channel with rotation [PDF]

open access: yes, 2012
The aim of the present study is to verify the reliability of a k-ω based hybrid RANS/LES model in reproducing the flow in a rib-roughened rotating channel. The numerical results obtained with the hybrid RANS/LES model are compared to experimental data by
Dick, Erik   +2 more
core  

Computational study of a complex three-dimensional shock boundary-layer interaction [PDF]

open access: yes, 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

Flow-based stress-blended eddy simulation: A local RANS/LES turbulence model for urban flow CFD simulations

open access: yesResults in Engineering
In the present article, we introduce a local hybrid RANS/LES turbulence model, the Flow-based Stress-Blended Eddy Simulation (Fb-SBES). The methodology is applied to urban flow simulations in atmospheric boundary layer.
Léo Cotteleer   +3 more
doaj   +1 more source

Toward an equivalence criterion for Hybrid RANS/LES methods [PDF]

open access: yesComputers & Fluids, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Friess, Christophe   +2 more
openaire   +1 more source

A Mathematical Solution to the Computational Fluid Dynamics (CFD) Dilemma

open access: yesMathematics, 2023
Turbulent flows of practical relevance are often characterized by high Reynolds numbers and solid boundaries. The need to account for flow separation seen in such flows requires the use of (partially) resolving simulation methods on relatively coarse ...
Stefan Heinz
doaj   +1 more source

Comparison of Lattice Boltzmann and Navier-Stokes for Zonal Turbulence Simulation of Urban Wind Flows

open access: yesFluids, 2022
In modelling turbulent flow around buildings, the computational domain needs to be much larger than the immediate neighbourhood of the building, resulting in computational costs that are excessive for many engineering applications.
Marta Camps Santasmasas   +5 more
doaj   +1 more source

Hybrid RANS/LES applied to complex terrain

open access: yesWind Energy, 2011
AbstractLarge Eddy Simulation (LES) of the wind in complex terrain is limited by computational cost. The number of computational grid points required to resolve the near‐ground turbulent structures (eddies) are very high. The traditional solution to the problem has been to apply a wall function that accounts for the whole near‐wall region.
A. Bechmann, N. N. Sørensen
openaire   +1 more source

The prospect of using LES and DES in engineering design, and the research required to get there [PDF]

open access: yes, 2014
In this paper we try to look into the future to divine how large eddy and detached eddy simulations (LES and DES, respectively) will be used in the engineering design process about 20-30 years from now.
Larsson, Johan, Wang, Qiqi
core   +1 more source

Predictions of Conjugate Heat Transfer in Turbulent Channel Flow Using Advanced Wall-Modeled Large Eddy Simulation Techniques

open access: yesEntropy, 2021
In this paper, advanced wall-modeled large eddy simulation (LES) techniques are used to predict conjugate heat transfer processes in turbulent channel flow. Thereby, the thermal energy transfer process involves an interaction of conduction within a solid
Yongxiang Li   +3 more
doaj   +1 more source

A Hybrid Model Based on Continuous Fluctuation Corrections [PDF]

open access: yes, 2008
A novel method is proposed for blending RANS and VMS-LES approaches in a hybrid model. To this purpose, the flow variables are decomposed in a RANS part (i.e.
Camarri, Simone   +4 more
core   +2 more sources

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