Pressure, density, temperature and entropy fluctuations in compressible turbulent plane channel flow

GA Gerolymos, I Vallet - Journal of fluid mechanics, 2014 - cambridge.org
We investigate the fluctuations of thermodynamic state variables in compressible
aerodynamic wall turbulence, using results of direct numerical simulation (DNS) of …

Reynolds-stress model flow prediction in aircraft-engine intake double-S-shaped duct

GA Gerolymos, S Joly, M Mallet, I Vallet - Journal of Aircraft, 2010 - arc.aiaa.org
The purpose of the present paper is to assess the predictive capability of Reynolds-
averaged Navier–Stokes computations using seven-equation Reynolds-stress model wall …

Modeling depth-averaged streamwise velocity in straight trapezoidal compound channels with ice cover

F Wang, W Huai, M Liu, X Fu - Journal of Hydrology, 2020 - Elsevier
This study considers the flow of water in ice-covered compound channels with straight
trapezoidal cross-sections. For describing the lateral distribution of depth-averaged …

Term-by-term analysis of near-wall second-moment closures

GA Gerolymos, C Lo, I Vallet, BA Younis - AIAA journal, 2012 - arc.aiaa.org
Term-by-Term Analysis of Near-Wall Second-Moment Closures Page 1 Term-by-Term Analysis
of Near-Wall Second-Moment Closures GA Gerolymos, ∗ C. Lo, † and I. Vallet ‡ Université …

Wall effects on pressure fluctuations in turbulent channel flow

GA Gerolymos, D Sénéchal, I Vallet - Journal of Fluid Mechanics, 2013 - cambridge.org
The purpose of the present paper is to study the influence of wall echo on pressure
fluctuations are usually of the same sign and approximately equal. The above results are …

[PDF][PDF] Multi-task learning based convolutional models with curriculum learning for the anisotropic reynolds stress tensor in turbulent duct flow

HS de Ocáriz Borde, D Sondak… - ArXiv, abs …, 2021 - researchgate.net
Abstract The Reynolds-averaged Navier-Stokes (RANS) equations require accurate
modeling of the anisotropic Reynolds stress tensor. Traditional closure models, while …

Reynolds-stress model prediction of 3-D duct flows

GA Gerolymos, I Vallet - Flow, Turbulence and Combustion, 2016 - Springer
The paper examines the impact of different modelling choices in second-moment closures
by assessing model performance in predicting 3-D duct flows. The test-cases (developing …

Low-diffusion approximate Riemann solvers for Reynolds-stress transport

NB Nasr, GA Gerolymos, I Vallet - Journal of Computational Physics, 2014 - Elsevier
The paper investigates the use of low-diffusion (contact-discontinuity-resolving) approximate
Riemann solvers for the convective part of the Reynolds-averaged Navier–Stokes (rans) …

Implicit meanflow–multigrid algorithms for Reynolds stress model computation of 3‐D anisotropy‐driven and compressible flows

GA Gerolymos, I Vallet - … journal for numerical methods in fluids, 2009 - Wiley Online Library
The present paper investigates the multigrid (MG) acceleration of compressible Reynolds‐
averaged Navier–Stokes computations using Reynolds‐stress model 7‐equation turbulence …

Reynolds‐stress modelling of M = 2.25 shock‐wave/turbulent boundary‐layer interaction

I Vallet - International journal for numerical methods in fluids, 2008 - Wiley Online Library
Abstract M= 2.25 shock‐wave/turbulent‐boundary‐layer interactions over a compression
ramp for several angles (8, 13 and 18°) at Reynolds‐number Re= 7× 103 were simulated …