Survey of machine-learning wall models for large-eddy simulation
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 …
machine-learning (ML) techniques. To this end, we implement three ML wall models in an …
Data-enabled recalibration of the Spalart–Allmaras model
We use experimental and simulation data to recalibrate the standard Spalart–Allmaras
model. Free-shear flow, the buffer layer, the log layer, and flows with adverse pressure …
model. Free-shear flow, the buffer layer, the log layer, and flows with adverse pressure …
Differentiable turbulence ii
V Shankar, R Maulik, V Viswanathan - arXiv preprint arXiv:2307.13533, 2023 - arxiv.org
Differentiable fluid simulators are increasingly demonstrating value as useful tools for
developing data-driven models in computational fluid dynamics (CFD). Differentiable …
developing data-driven models in computational fluid dynamics (CFD). Differentiable …
[HTML][HTML] Progressive augmentation of Reynolds stress tensor models for secondary flow prediction by computational fluid dynamics driven surrogate optimisation
Generalisability and the consistency of the a posteriori results are the most critical points of
view regarding data-driven turbulence models. This study presents a progressive …
view regarding data-driven turbulence models. This study presents a progressive …
On the benefits and limitations of echo state networks for turbulent flow prediction
MS Ghazijahani, F Heyder… - Measurement …, 2022 - iopscience.iop.org
The prediction of turbulent flow by the application of machine learning (ML) algorithms to big
data is a concept currently in its infancy which requires further development. It is of special …
data is a concept currently in its infancy which requires further development. It is of special …
Log-law recovery through reinforcement-learning wall model for large eddy simulation
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 …
modeling tool for near-wall turbulence. RL has demonstrated its effectiveness in solving high …
[HTML][HTML] Constrained re-calibration of two-equation Reynolds-averaged Navier–Stokes models
Abstract Machine-learned augmentations to turbulence models can be advantageous for
flows within the training dataset but can often cause harm outside. This lack of …
flows within the training dataset but can often cause harm outside. This lack of …
[HTML][HTML] An Investigation of LES Wall Modeling for Rayleigh–Bénard Convection via Interpretable and Physics-Aware Feedforward Neural Networks with DNS
The traditional approach of using the Monin–Obukhov similarity theory (MOST) to model
near-surface processes in large-eddy simulations (LESs) can lead to significant errors in …
near-surface processes in large-eddy simulations (LESs) can lead to significant errors in …
A priori screening of data-enabled turbulence models
Assessing the compliance of a white-box turbulence model with known turbulent knowledge
is straightforward. It enables users to screen conventional turbulence models and identify …
is straightforward. It enables users to screen conventional turbulence models and identify …
Progressive augmentation of turbulence models for flow separation by multi-case computational fluid dynamics driven surrogate optimization
In the field of data-driven turbulence modeling, the consistency of the a posteriori results and
generalizability are the most critical aspects of new models. In this study, we combine a multi …
generalizability are the most critical aspects of new models. In this study, we combine a multi …