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Using stratification to mitigate end-effects in quasi-Keplerian Taylor-Couette flow
(Cambridge University PressJournal of Fluid Mechanics, 2016-02-24)
Efforts to model accretion disks in the laboratory using Taylor–Couette flow apparatus are plagued with problems due to the substantial impact the end-plates have on the flow. We explore the possibility of mitigating the ...
Turbulent jets with off-source heating
(Cambridge University PressJournal of Fluid Mechanics, 2017-08-10)
Motivated by anomalous entrainment behaviour in cumulus clouds, Bhat et al. (Exp. Fluids, vol. 7, 1989, pp. 99–102) pioneered a laboratory experiment to study turbulent jets subjected to a volumetric heating away from the ...
The structure and origin of confined Holmboe waves
(Cambridge University PressJournal of Fluid Mechanics, 2018-08-10)
Finite-amplitude manifestations of stratified shear flow instabilities and their spatio-temporal coherent structures are believed to play an important role in turbulent geophysical flows. Such shear flows commonly have ...
CLEANING OF VISCOUS DROPS ON A FLAT INCLINED SURFACE USING GRAVITY-DRIVEN FILM FLOWS
(ElsevierFood and Bioproducts Processing, 2014-10-07)
We investigate the fluid mechanics of cleaning viscous drops attached to a flat inclined
surface using thin gravity-driven film flows. We focus on the case where the drop cannot be
detached from the surface by the mechanical ...
Cleaning of Viscous Droplets on an Inclined Planar Surface Using Film Flows
(Australian Fluids Mechanics SocietyProceedings of the Nineteenth Australasian Fluid Mechanics Conference, 2014)
We investigate the fluid mechanics of cleaning viscous drops
attached to a flat inclined surface using thin gravity-driven film
flows. We focus on the case where the drop cannot be detached
from the surface by the mechanical ...
On the meaning of mixing efficiency for buoyancy driven mixing in stratified turbulent flows
(Cambridge University PressJournal of Fluid Mechanics, 2015-09-17)
The concept of a mixing efficiency is widely used to relate the amount of irreversible diabatic mixing in a stratified flow to the amount of energy available to support mixing. This common measure of mixing in a flow is ...
Inclined gravity currents filling basins: The influence of Reynolds number on entrainment into gravity currents
(AIPPhysics of Fluids, 2015-09-17)
Gravity currents of dense fluid feed basins in many important natural and industrial systems, such as lakes fed by dense rivers and auditoria supplied with cooled air by ventilation systems. The entrainment into these ...
Interaction between the Blasius boundary layer and a free surface
(Cambridge University PressJournal of Fluid Mechanics, 2018-03-25)
We consider the steady, supercritical flow of a fluid layer. The layer is bounded above by a free surface and below by a rigid no-slip base. The base is in two parts: the downstream part of the base is stationary, while ...
Efficient mixing in stratified flows: experimental study of a Rayleigh-Taylor unstable interface within an otherwise stable stratification
(Cambridge University PressJournal of Fluid Mechanics, 2014-09-09)
Boussinesq salt-water laboratory experiments of Rayleigh–Taylor instability (RTI) can achieve mixing efficiencies greater than 0.75 when the unstable interface is confined between two stable stratifications. This is much ...
Vortex rings impinging on permeable boundaries
(Physics of Fluids, 2015-01-17)
Experiments with vortex rings impinging permeable and solid boundaries are presented in order to investigate the influence of permeability. Utilizing Particle Image Velocimetry, we compared the behaviour of a vortex ring ...