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 …

An interpretable framework of data-driven turbulence modeling using deep neural networks

C Jiang, R Vinuesa, R Chen, J Mi, S Laima, H Li - Physics of Fluids, 2021 - pubs.aip.org
Reynolds-averaged Navier–Stokes simulations represent a cost-effective option for practical
engineering applications, but are facing ever-growing demands for more accurate …

Model averaging in ecology: A review of Bayesian, information‐theoretic, and tactical approaches for predictive inference

CF Dormann, JM Calabrese… - Ecological …, 2018 - Wiley Online Library
In ecology, the true causal structure for a given problem is often not known, and several
plausible models and thus model predictions exist. It has been claimed that using weighted …

A novel evolutionary algorithm applied to algebraic modifications of the RANS stress–strain relationship

J Weatheritt, R Sandberg - Journal of Computational Physics, 2016 - Elsevier
This paper presents a novel and promising approach to turbulence model formulation, rather
than putting forward a particular new model. Evolutionary computation has brought symbolic …

Feature selection and processing of turbulence modeling based on an artificial neural network

Y Yin, P Yang, Y Zhang, H Chen, S Fu - Physics of Fluids, 2020 - pubs.aip.org
Data-driven turbulence modeling has been considered an effective method for improving the
prediction accuracy of Reynolds-averaged Navier–Stokes equations. Related studies aimed …

The impact of uncertainty on predictions of the CovidSim epidemiological code

W Edeling, H Arabnejad, R Sinclair… - Nature Computational …, 2021 - nature.com
Epidemiological modelling has assisted in identifying interventions that reduce the impact of
COVID-19. The UK government relied, in part, on the CovidSim model to guide its policy to …

The development of algebraic stress models using a novel evolutionary algorithm

J Weatheritt, RD Sandberg - International Journal of Heat and Fluid Flow, 2017 - Elsevier
This work presents developments to a novel evolutionary framework that symbolically
regresses algebraic forms of the Reynolds stress anisotropy tensor. This work contributes to …

Improving the k–ω–γ–Ar transition model by the field inversion and machine learning framework

M Yang, Z Xiao - Physics of Fluids, 2020 - pubs.aip.org
Accurate simulation of transition from the laminar to the turbulent flow is of great importance
in industrial applications. In the present work, the framework of field inversion and machine …

Conditioning and accurate solutions of Reynolds average Navier–Stokes equations with data-driven turbulence closures

BP Brener, MA Cruz, RL Thompson… - Journal of Fluid …, 2021 - cambridge.org
The possible ill conditioning of the Reynolds average Navier–Stokes (RANS) equations
when an explicit data-driven Reynolds stress tensor closure is employed is a discussion of …