Anisotropic minimum-dissipation (AMD) subgrid-scale model implemented in OpenFOAM: Verification and assessment in single-phase and multi-phase flows

AP Zahiri, E Roohi - Computers & Fluids, 2019 - Elsevier
Minimum-dissipation sub-grid models represent simple alternatives to the Smagorinsky-type
approaches to the implementation of sub-grid scales'(SGS) effects in the large-eddy …

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 …

Large-eddy simulations of stratified atmospheric boundary layers: Comparison of different subgrid models

SN Gadde, A Stieren, RJAM Stevens - Boundary-Layer Meteorology, 2021 - Springer
The development and assessment of subgrid-scale (SGS) models for large-eddy simulations
of the atmospheric boundary layer is an active research area. In this study, we compare the …

[HTML][HTML] Log-law recovery through reinforcement-learning wall model for large eddy simulation

A Vadrot, XIA Yang, HJ Bae, M Abkar - Physics of Fluids, 2023 - pubs.aip.org
This paper focuses on the use of reinforcement learning (RL) as a machine-learning (ML)
modeling tool for near-wall turbulence. RL has demonstrated its effectiveness in solving high …