Predictive large-eddy-simulation wall modeling via physics-informed neural networks

XIA Yang, S Zafar, JX Wang, H Xiao - Physical Review Fluids, 2019 - APS
While data-based approaches were found to be useful for subgrid scale (SGS) modeling in
Reynolds-averaged Navier-Stokes (RANS) simulations, there have not been many attempts …

Influence of atmospheric stability on wind-turbine wakes: A large-eddy simulation study

M Abkar, F Porté-Agel - Physics of fluids, 2015 - pubs.aip.org
In this study, large-eddy simulation is combined with a turbine model to investigate the
influence of atmospheric thermal stability on wind-turbine wakes. The simulation results …

Atmospheric turbulence effects on wind-turbine wakes: An LES study

YT Wu, F Porté-Agel - energies, 2012 - mdpi.com
A numerical study of atmospheric turbulence effects on wind-turbine wakes is presented.
Large-eddy simulations of neutrally-stratified atmospheric boundary layer flows through …

Large eddy simulation of vertical axis wind turbine wakes

S Shamsoddin, F Porté-Agel - Energies, 2014 - mdpi.com
In this study, large eddy simulation (LES) is combined with a turbine model to investigate the
wake behind a vertical-axis wind turbine (VAWT) in a three-dimensional turbulent flow. Two …

Wake flow in a wind farm during a diurnal cycle

M Abkar, A Sharifi, F Porté-Agel - Journal of Turbulence, 2016 - Taylor & Francis
The atmospheric boundary layer (ABL) undergoes substantial changes in its structure and
dynamics in the course of a day due to the transient nature of forcing factors such as the …

Flow adjustment inside and around large finite-size wind farms

KL Wu, F Porté-Agel - Energies, 2017 - mdpi.com
In this study, large-eddy simulations are performed to investigate the flow inside and around
large finite-size wind farms in conventionally-neutral atmospheric boundary layers. Special …

Survey of machine-learning wall models for large-eddy simulation

A Vadrot, XIA Yang, M Abkar - Physical Review Fluids, 2023 - APS
This survey investigates wall modeling in large-eddy simulations (LES) using data-driven
machine-learning (ML) techniques. To this end, we implement three ML wall models in an …

The effect of free-atmosphere stratification on boundary-layer flow and power output from very large wind farms

M Abkar, F Porté-Agel - Energies, 2013 - mdpi.com
Large-eddy simulation is used to study the influence of free-atmosphere stratification on the
structure of atmospheric boundary-layer flow inside and above very large wind farms, as …

An analytical model for the effect of vertical wind veer on wind turbine wakes

M Abkar, JN Sørensen, F Porté-Agel - Energies, 2018 - mdpi.com
In this study, an analytical wake model for predicting the mean velocity field downstream of a
wind turbine under veering incoming wind is systematically derived and validated. The new …

Self-similarity and flow characteristics of vertical-axis wind turbine wakes: an LES study

M Abkar, JO Dabiri - Journal of Turbulence, 2017 - Taylor & Francis
Large eddy simulation (LES) is coupled with a turbine model to study the structure of the
wake behind a vertical-axis wind turbine (VAWT). In the simulations, a tuning-free …