The impact of imposed Couette flow on the stability of pressure-driven flows over porous surfaces

S Hooshyar, HN Yoshikawa, P Mirbod - Journal of Engineering …, 2022 - Springer
We present linear stability analysis of a pressure-driven flow in a fluid-layer overlaying
porous media in the presence of a Couette component introduced by an upper impermeable …

Influence of freestream turbulence on the flow over a wall roughness

MA Bucci, S Cherubini, JC Loiseau, JC Robinet - Physical Review Fluids, 2021 - APS
The effect of freestream turbulence on the dynamics of an incompressible flow past a
cylindrical roughness element in subcritical conditions (ie, for Reynolds numbers below the …

Optimal transient energy growth of two-dimensional perturbation in a magnetohydrodynamic plane Poiseuille flow of Casson fluid

MS Basavaraj… - Journal of Fluids …, 2024 - asmedigitalcollection.asme.org
The study investigates the influence of the Casson fluid parameter and the spanwise uniform
magnetic field on the onset of instability against infinitesimal disturbances in an electrically …

Algebraic growth of 2D optimal perturbation of a plane Poiseuille flow in a Brinkman porous medium

MS Basavaraj, DLS Kumar - Mathematics and Computers in Simulation, 2024 - Elsevier
The impact of various factors on the stability of a plane porous Poiseuille flow is investigated
in detail. Both modal and non-modal linear stability analyses are used to study the effects of …

Effect of anisotropy and inhomogeneity on the stability of liquid film flowing down a porous inclined plane

S Doomra, G Sharma, P Bera - Physics of Fluids, 2022 - pubs.aip.org
We examined the linear stability of a Newtonian liquid film flow past a porous inclined plane.
Falling film on inclined permeable planes displays three instability modes: surface, shear …

Stability of a plane Poiseuille flow in a channel bounded by anisotropic porous walls

S Karmakar, R Usha, G Chattopadhyay, S Millet… - Physics of …, 2022 - pubs.aip.org
Linear stability of a plane Poiseuille flow in a channel bounded by anisotropic permeable
walls supported by rigid walls is studied. Characteristic instability features due to two …

Dual analysis of stability in plane Poiseuille channel flow with uniform vertical crossflow

DL Kumar, MS Basavaraj - Physics of Fluids, 2024 - pubs.aip.org
In this paper, we investigate the effect of uniform vertical crossflow on the plane Poiseuille
channel flow. The derivation and linearization of the Navier–Stokes equations are performed …

Linear stability of a plane Poiseuille flow in a three-layered channel with a centered anisotropic porous layer

S Karmakar, R Usha, P Shukla - International Journal of Heat and Mass …, 2024 - Elsevier
A linear stability analysis is performed to investigate the stability of a plane Poiseuille flow of
a fluid-porous-fluid three-layer system in a channel with smooth rigid walls. It is widely …

Linear stability analysis of a Couette-Poiseuille flow: A fluid layer overlying an anisotropic and inhomogeneous porous layer

M Roy, S Ghosh, GPR Sekhar - Computers & Mathematics with …, 2024 - Elsevier
We investigate the temporal stability analysis of a two-layer flow inside a channel that is
driven by pressure. The channel consists of a fluid layer overlying an inhomogeneous and …

Influence of porous material on the flow behind a backward-facing step: experimental study

L Klotz, K Bukowski, K Gumowski - Journal of Fluid Mechanics, 2024 - cambridge.org
We investigate effect of porous insert located upstream of the separation edge of a backward-
facing step (BFS) in early transitional regime as a function of Reynolds number. This is an …