[HTML][HTML] Evaluation of machine learning algorithms for prediction of regions of high Reynolds averaged Navier Stokes uncertainty

J Ling, J Templeton - Physics of Fluids, 2015 - pubs.aip.org
Reynolds Averaged Navier Stokes (RANS) models are widely used in industry to predict
fluid flows, despite their acknowledged deficiencies. Not only do RANS models often …

Comparison of different data-assimilation approaches to augment RANS turbulence models

AS Cato, PS Volpiani, V Mons, O Marquet, D Sipp - Computers & Fluids, 2023 - Elsevier
Abstract Reynolds-averaged Navier–Stokes (RANS) simulations are the most widespread
approach to predict turbulent flows typical of industrial problems. Despite its success, the …

Physics-informed machine learning approach for reconstructing Reynolds stress modeling discrepancies based on DNS data

JX Wang, JL Wu, H Xiao - Physical Review Fluids, 2017 - APS
Turbulence modeling is a critical component in numerical simulations of industrial flows
based on Reynolds-averaged Navier-Stokes (RANS) equations. However, after decades of …

Towards integrated field inversion and machine learning with embedded neural networks for RANS modeling

JR Holland, JD Baeder, K Duraisamy - AIAA Scitech 2019 forum, 2019 - arc.aiaa.org
R averaged Navier-Stokes (RANS) model deficiencies have been well documented in a
wide variety of common applications. Additionally, despite advancements in computing …

A priori assessment of prediction confidence for data-driven turbulence modeling

JL Wu, JX Wang, H Xiao, J Ling - Flow, Turbulence and Combustion, 2017 - Springer
Abstract Although Reynolds-Averaged Navier–Stokes (RANS) equations are still the
dominant tool for engineering design and analysis applications involving turbulent flows …

Turbulence modeling in the age of data

K Duraisamy, G Iaccarino, H Xiao - Annual review of fluid …, 2019 - annualreviews.org
Data from experiments and direct simulations of turbulence have historically been used to
calibrate simple engineering models such as those based on the Reynolds-averaged Navier …

Quantification of model uncertainty in RANS simulations: A review

H Xiao, P Cinnella - Progress in Aerospace Sciences, 2019 - Elsevier
In computational fluid dynamics simulations of industrial flows, models based on the
Reynolds-averaged Navier–Stokes (RANS) equations are expected to play an important …

Recommendations for future efforts in RANS modeling and simulation

RH Bush, TS Chyczewski, K Duraisamy… - AIAA scitech 2019 …, 2019 - arc.aiaa.org
The roadmap laid out in the CFD Vision 2030 document [1] suggests that a decision to move
away from RANS research needs to be made in the current timeframe (around 2020). This …

[HTML][HTML] Data-driven modelling of the Reynolds stress tensor using random forests with invariance

MLA Kaandorp, RP Dwight - Computers & Fluids, 2020 - Elsevier
A novel machine learning algorithm is presented, serving as a data-driven turbulence
modeling tool for Reynolds Averaged Navier-Stokes (RANS) simulations. This machine …

Reynolds-averaged Navier–Stokes equations with explicit data-driven Reynolds stress closure can be ill-conditioned

J Wu, H Xiao, R Sun, Q Wang - Journal of Fluid Mechanics, 2019 - cambridge.org
Reynolds-averaged Navier–Stokes (RANS) simulations with turbulence closure models
continue to play important roles in industrial flow simulations. However, the commonly used …