Reynolds-number dependence of the near-wall flow over irregular rough surfaces

A Busse, M Thakkar, ND Sandham - Journal of Fluid Mechanics, 2017 - cambridge.org
The Reynolds-number dependence of turbulent channel flow over two irregular rough
surfaces, based on scans of a graphite and a grit-blasted surface, is studied by direct …

The mechanism of streak formation in near-wall turbulence

SI Chernyshenko, MF Baig - Journal of Fluid Mechanics, 2005 - cambridge.org
Two conceptual frameworks for the origin of the streaky pattern in near-wall developed
turbulent flows are compared. According to the framework that dominated the research over …

Scaling of pressure fluctuations in compressible turbulent plane channel flow

GA Gerolymos, I Vallet - Journal of Fluid Mechanics, 2023 - cambridge.org
Scaling of pressure fluctuations in compressible turbulent plane channel flow Page 1 J. Fluid
Mech. (2023), vol. 958, A19, doi:10.1017/jfm.2023.42 Scaling of pressure fluctuations in …

Turbulent drag reduction in Taylor-Couette flows using different super-hydrophobic surface configurations

MS Naim, MF Baig - Physics of Fluids, 2019 - pubs.aip.org
Turbulent drag reduction (DR) in an incompressible Taylor-Couette flow configuration using
different patterns of “idealized” superhydrophobic surfaces (SHS) on rotating inner-wall is …

Orr mechanism in transition of parallel shear flow

Y Jiao, Y Hwang, SI Chernyshenko - Physical Review Fluids, 2021 - APS
The Orr mechanism is revisited to understand its precise role in the transition of plane
Couette flow. By considering homogeneous shear flow and plane Couette flow, it is …

Taylor–Couette flows undergoing orthogonal rotation subject to thermal stratification

O Khawar, MF Baig, S Sanghi - Physics of Fluids, 2021 - pubs.aip.org
The present study involves direct numerical simulation of turbulent Taylor–Couette flow
undergoing orthogonal rotation (gravity and rotation axis are perpendicular) subject to …

Skin-friction drag reduction by axial oscillations of the inner cylinder in turbulent Taylor–Couette flows

O Khawar, MF Baig, S Sanghi - Physics of Fluids, 2023 - pubs.aip.org
Skin-friction drag reduction by axial oscillations of an inner cylinder is numerically
investigated at radius ratio (η= 0.5) using direct numerical simulation. In the present study, at …

Opposition control in compressible turbulent flows

M Ahmad, MF Baig, SF Anwer - Physics of Fluids, 2025 - pubs.aip.org
Opposition control using out-of-phase, combined spanwise and wall-normal velocities at the
walls has been studied. The control aims to establish a virtual wall away from the boundary …

Synthetic wall boundary conditions for the direct numerical simulation of wall-bounded turbulence

B Podvin, Y Fraigneau - Journal of Turbulence, 2011 - Taylor & Francis
We report on the simulation of a turbulent channel flow in a reduced computational domain
where the wall no-slip boundary condition is replaced with a synthetic boundary condition …

A deterministic model for the sublayer streaks in turbulent boundary layers for application to flow control

PW Carpenter, KL Kudar, R Ali… - … Transactions of the …, 2007 - royalsocietypublishing.org
We present a relatively simple, deterministic, theoretical model for the sublayer streaks in a
turbulent boundary layer based on an analogy with Klebanoff modes. Our approach is to …