A review of hybrid RANS-LES methods for turbulent flows: Concepts and applications

S Heinz - Progress in Aerospace Sciences, 2020 - Elsevier
The hybridization of Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation
(LES) methods is seen to be the most promising way to efficiently deal with separated …

Grid-point requirements for large eddy simulation: Chapman's estimates revisited

H Choi, P Moin - Physics of fluids, 2012 - pubs.aip.org
Resolution requirements for large eddy simulation (LES), estimated by Chapman [AIAA J.
17, 1293 (1979)], are modified using accurate formulae for high Reynolds number boundary …

A mathematical solution to the Computational Fluid Dynamics (CFD) dilemma

S Heinz - Mathematics, 2023 - mdpi.com
Turbulent flows of practical relevance are often characterized by high Reynolds numbers
and solid boundaries. The need to account for flow separation seen in such flows requires …

Wall model based on neural networks for LES of turbulent flows over periodic hills

Z Zhou, G He, X Yang - Physical Review Fluids, 2021 - APS
In this work, a data-driven wall model for turbulent flows over periodic hills is developed
using the feedforward neural network (FNN) and data from wall-resolved large-eddy …

A parametric and feasibility study for data sampling of the dynamic mode decomposition: range, resolution, and universal convergence states

CY Li, Z Chen, TKT Tse, AU Weerasuriya, X Zhang… - Nonlinear …, 2022 - Springer
Scientific research and engineering practice often require the modeling and decomposition
of nonlinear systems. The dynamic mode decomposition (DMD) is a novel Koopman-based …

Challenges in low-Prandtl number heat transfer simulation and modelling

G Grötzbach - Nuclear engineering and design, 2013 - Elsevier
Nuclear heat transfer applications with low-Prandtl number fluids are often in the transition
range between conduction and convection dominated regimes. Most flows in reactors …

Large eddy simulation and investigation on the laminar-turbulent transition and turbulence-cavitation interaction in the cavitating flow around hydrofoil

Y Chen, J Li, Z Gong, X Chen, C Lu - International Journal of Multiphase …, 2019 - Elsevier
The intrinsic 3D vortical structures of turbulent cavitating flow are difficult to be measured in
experiment. In the present work, the compressible large eddy simulation (LES) was …

Spanwise resolution requirements for the simulation of high-Reynolds-number flows past a square cylinder

Y Cao, T Tamura, H Kawai - Computers & Fluids, 2020 - Elsevier
In the past, the coarse spanwise resolution was widely used for high-Reynolds-number flow
simulations of a two-dimensional bluff body with the purpose of reducing the computational …

Understanding of energy conversion and losses in a centrifugal pump impeller

W Chen, Y Li, Z Liu, Y Hong - Energy, 2023 - Elsevier
As energy consumption saving becomes an urgent need in the contemporary world, the
demand for improving pump energy efficiency is attracting increasing attention. This paper …

[HTML][HTML] A parametric and feasibility study for data sampling of the dynamic mode decomposition: Spectral insights and further explorations

CY Li, Z Chen, TKT Tse, AU Weerasuriya, X Zhang… - Physics of …, 2022 - pubs.aip.org
The present work extends the parametric investigation on the sampling nuances of dynamic
mode decomposition (DMD) under Koopman analysis. Through turbulent wakes, the study …