A review of hybrid RANS-LES methods for turbulent flows: Concepts and applications

S Heinz - Progress in Aerospace Sciences, 2020 - Elsevier
The hybridization of Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation
(LES) methods is seen to be the most promising way to efficiently deal with separated …

Modeling subgrid-scale forces by spatial artificial neural networks in large eddy simulation of turbulence

C Xie, J Wang, WE - Physical Review Fluids, 2020 - APS
Spatial artificial neural network (ANN) models are developed for subgrid-scale (SGS) forces
in the large eddy simulation (LES) of turbulence. The input features are based on the first …

Artificial neural network-based nonlinear algebraic models for large eddy simulation of turbulence

C Xie, Z Yuan, J Wang - Physics of Fluids, 2020 - pubs.aip.org
In this work, artificial neural network-based nonlinear algebraic models (ANN-NAMs) are
developed for the subgrid-scale (SGS) stress in large eddy simulation (LES) of turbulence at …

Artificial neural network mixed model for large eddy simulation of compressible isotropic turbulence

C Xie, J Wang, H Li, M Wan, S Chen - Physics of Fluids, 2019 - pubs.aip.org
In this work, the subgrid-scale (SGS) stress and the SGS heat flux of compressible isotropic
turbulence are modeled by an artificial neural network (ANN) mixed model (ANNMM), which …

Assessing aerodynamic loads on low-rise buildings considering Reynolds number and turbulence effects: a review

MF Khaled, AM Aly - Advances in Aerodynamics, 2022 - Springer
This paper presents an extensive review of existing techniques used in estimating design
wind pressures considering Reynolds number and turbulence effects, as well as a case …

Data-driven model development for large-eddy simulation of turbulence using gene-expression programing

H Li, Y Zhao, J Wang, RD Sandberg - Physics of Fluids, 2021 - pubs.aip.org
We apply the gene-expression programing (GEP) method to develop subgrid-scale models
for large-eddy simulations (LESs) of turbulence. The GEP model is trained based on …

Modeling subgrid-scale force and divergence of heat flux of compressible isotropic turbulence by artificial neural network

C Xie, K Li, C Ma, J Wang - Physical Review Fluids, 2019 - APS
In this paper, the subgrid-scale (SGS) force and the divergence of SGS heat flux of
compressible isotropic turbulence are modeled directly by an artificial neural network (ANN) …

[HTML][HTML] Artificial neural network-based spatial gradient models for large-eddy simulation of turbulence

Y Wang, Z Yuan, C Xie, J Wang - AIP Advances, 2021 - pubs.aip.org
The subgrid-scale stress (SGS) of large-eddy simulation (LES) is modeled by artificial neural
network-based spatial gradient models (ANN-SGMs). The velocity gradients at neighboring …

Wall-modeled large-eddy simulation of a high Reynolds number separating and reattaching flow

GI Park - AIAA Journal, 2017 - arc.aiaa.org
The performance of two wall models based on Reynolds-averaged Navier–Stokes is
compared in large-eddy simulation of a high Reynolds number separating and reattaching …

Effects of surface roughness on a separating turbulent boundary layer

W Wu, U Piomelli - Journal of Fluid Mechanics, 2018 - cambridge.org
Separating turbulent boundary layers over smooth and rough flat plates are studied by large-
eddy simulations. A suction–blowing velocity distribution imposed at the top boundary of the …