An enhanced version of DES with rapid transition from RANS to LES in separated flows

ML Shur, PR Spalart, MK Strelets, AK Travin - Flow, turbulence and …, 2015 - Springer
The paper addresses the issue of the significant delay of transition from RANS to LES in
shear layers, which is known to affect the original version of Detached-Eddy Simulation …

Towards an enhanced protection of attached boundary layers in hybrid RANS/LES methods

S Deck, N Renard - Journal of Computational Physics, 2020 - Elsevier
A robust strategy for the RANS shielding of attached boundary layers in a hybrid RANS/LES
context is presented, addressing two major issues. Firstly, the attached boundary layers …

Detached eddy simulation: Recent development and application to compressor tip leakage flow

X He, F Zhao, M Vahdati - Journal of …, 2022 - asmedigitalcollection.asme.org
Detached eddy simulation (DES) and its variants are emerging tools for turbomachinery
simulations. In this paper, the state-of-the-art upgrades of DES are reviewed, and their …

Computation method and control strategy of rotating separation flows in hydraulic machinery

C Wang, F Wang, H Wang, H Zhao, Z Yao… - Journal of …, 2022 - Springer
Rotating separation flow (RSF) in hydraulic machinery is characterized by the large flow
separations and complex vortical structures induced by the effects of strong rotation, large …

A new subgrid characteristic length for turbulence simulations on anisotropic grids

FX Trias, A Gorobets, MH Silvis, RWCP Verstappen… - Physics of …, 2017 - pubs.aip.org
Direct numerical simulations of the incompressible Navier-Stokes equations are not feasible
yet for most practical turbulent flows. Therefore, dynamically less complex mathematical …

Assessment of delayed DES and improved delayed DES combined with a shear-layer-adapted subgrid length-scale in separated flows

EK Guseva, AV Garbaruk, MK Strelets - Flow, turbulence and combustion, 2017 - Springer
A comparative study is conducted between the original versions of Delayed Detached-Eddy
Simulation (DDES) and Improved DDES (IDDES) and these approaches combined with a …

Flow dynamics past a 30P30N three-element airfoil using improved delayed detached-eddy simulation

N Ashton, A West, F Mendonça - AIAA Journal, 2016 - arc.aiaa.org
NOISE emissions from commercial aircraft during takeoff and landing are crucial limiting
factors in the expansion of current airports, both in terms of their operating hours and …

Summary of the 4th high-lift prediction workshop hybrid rans/les technology focus group

N Ashton, P Batten, A Cary, K Holst - Journal of Aircraft, 2024 - arc.aiaa.org
This paper summarizes the collective efforts of multiple teams that contributed to the hybrid
RANS/LES technical focus group for the 4th AIAA CFD High Lift Prediction Workshop (HLPW …

Scale-resolving simulations of a civil aircraft wing transonic shock-buffet experiment

L Masini, S Timme, AJ Peace - AIAA Journal, 2020 - arc.aiaa.org
The flow physics governing the shock-buffet phenomenon on swept wings remain disputed
without an unequivocal description. Herein is a contribution to the ongoing discussion that …

Acoustic Modeling of Compressible Jet from Chevron Nozzle: A Comparison of URANS, LES and DES Models

SP Murugu, AR Srikrishnan, BK Krishnaraj, A Jayaraj… - Symmetry, 2022 - mdpi.com
Chevron nozzles, which are characterized by the serrations at the nozzle exit, are widely
used for suppressing jet noise in aircraft engines. The noise suppression is accomplished by …