Quantification of model uncertainty in RANS simulations: A review

H **ao, 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 …

Modeling the dynamics of PDE systems with physics-constrained deep auto-regressive networks

N Geneva, N Zabaras - Journal of Computational Physics, 2020 - Elsevier
In recent years, deep learning has proven to be a viable methodology for surrogate
modeling and uncertainty quantification for a vast number of physical systems. However, in …

Direct numerical simulation of turbulent channel flow up to

M Lee, RD Moser - Journal of fluid mechanics, 2015 - cambridge.org
A direct numerical simulation of incompressible channel flow at a friction Reynolds number
($\mathit {Re} _ {{\it\tau}} $) of 5186 has been performed, and the flow exhibits a number of …

A web services accessible database of turbulent channel flow and its use for testing a new integral wall model for LES

J Graham, K Kanov, XIA Yang, M Lee… - Journal of …, 2016 - Taylor & Francis
abstract The output from a direct numerical simulation (DNS) of turbulent channel flow at Re
τ≈ 1000 is used to construct a publicly and Web services accessible, spatio-temporal …

Applying Bayesian optimization with Gaussian process regression to computational fluid dynamics problems

Y Morita, S Rezaeiravesh, N Tabatabaei… - Journal of …, 2022 - Elsevier
Bayesian optimization (BO) based on Gaussian process regression (GPR) is applied to
different CFD (computational fluid dynamics) problems which can be of practical relevance …

Turbulence and secondary motions in square duct flow

S Pirozzoli, D Modesti, P Orlandi… - Journal of Fluid …, 2018 - cambridge.org
We study turbulent flows in pressure-driven ducts with square cross-section through direct
numerical simulation in a wide enough range of Reynolds number to reach flow conditions …

Reynolds-number dependence of turbulent skin-friction drag reduction induced by spanwise forcing

D Gatti, M Quadrio - Journal of Fluid Mechanics, 2016 - cambridge.org
Reynolds-number dependence of turbulent skin-friction drag reduction induced by
spanwise forcing Page 1 J. Fluid Mech. (2016), vol. 802, pp. 553–582. c Cambridge …

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 …

Quantifying uncertainty in turbulence resolving ship airwake simulations

D Linton, B Thornber - Ocean Engineering, 2021 - Elsevier
High fidelity computational fluid dynamics simulations of ship airwakes are often performed
with time accurate, turbulence resolving methods, such as large eddy simulation or …

Extreme-scale motions in turbulent plane Couette flows

M Lee, RD Moser - Journal of Fluid Mechanics, 2018 - cambridge.org
We study the large-scale motions in turbulent plane Couette flows at moderate friction
Reynolds number up to length of the domain. The presence of these very long structures is …