Insights into the turbulent flow of dense gases through high-fidelity simulations

P Cinnella, X Gloerfelt - Computers & Fluids, 2023 - Elsevier
This article reviews recent advances in the understanding of turbulent flows of non-ideal
gases through the use of high-fidelity direct and large eddy simulations. In particular, the …

Transient growth in diabatic boundary layers with fluids at supercritical pressure

PC Boldini, B Bugeat, JWR Peeters, M Kloker… - Physical Review …, 2024 - APS
In the region close to the thermodynamic critical point and in the proximity of the
pseudoboiling (Widom) line, strong property variations substantially alter the growth of …

Dense-gas effects on compressible boundary-layer stability

X Gloerfelt, JC Robinet, L Sciacovelli… - Journal of Fluid …, 2020 - cambridge.org
A study of dense-gas effects on the stability of compressible boundary-layer flows is
conducted. From the laminar similarity solution, the temperature variations are small due to …

Linear instability of Poiseuille flows with highly non-ideal fluids

J Ren, S Fu, R Pecnik - Journal of Fluid Mechanics, 2019 - cambridge.org
The objective of this work is to investigate linear modal and algebraic instability in Poiseuille
flows with fluids close to their vapour–liquid critical point. Close to this critical point, the ideal …

Instabilities in viscosity-stratified two-fluid channel flow over an anisotropic-inhomogeneous porous bottom

G Chattopadhyay, U Ranganathan, S Millet - Physics of Fluids, 2019 - pubs.aip.org
A linear stability analysis of a pressure driven, incompressible, fully developed laminar
Poiseuille flow of immiscible two-fluids of stratified viscosity and density in a horizontal …

Instability in strongly stratified plane Couette flow with application to supercritical fluids

B Bugeat, PC Boldini, AM Hasan… - Journal of Fluid …, 2024 - cambridge.org
This paper addresses the stability of plane Couette flow in the presence of strong density
and viscosity stratifications. It demonstrates the existence of a generalised inflection point …

The mechanism of long-wave instability in a shear-thinning film flow on a porous substrate

S Millet, R Usha, V Botton, F Rousset - Acta Mechanica, 2019 - Springer
A linear stability analysis of a thin shear-thinning film with a deformable top surface flowing
down an inclined porous substrate modelled as a smooth substrate with velocity slip at the …

Revisit compressible plane Couette and Poiseuille instability: Spectrum features of disturbances and dominant instability

J Ou - Physics of Fluids, 2024 - pubs.aip.org
Understanding the instability of compressible shear flows is of both academic interest and
practical importance for predicting transition in such flows. In this paper, the linear stability of …

Linear stability analysis of wall-bounded high-pressure transcritical fluids

M Bernades, F Capuano, L Jofre - arxiv preprint arxiv:2409.17310, 2024 - arxiv.org
Mixing and heat transfer rates are typically enhanced when operating at high-pressure
transcritical turbulent flow regimes. The rapid variation of thermophysical properties in the …

Linear stability exploration of transcritical non-isothermal Poiseuille flows

M Bernades, F Capuano… - ECCOMAS 2024: 9th …, 2024 - upcommons.upc.edu
High-pressure transcritical turbulent flow regimes enhance the mixing and heat transfer
rates with respect to atmospheric pressure conditions. The two characteristic states of …