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Now showing items 1151-1160 of 1850
Analytical and experimental investigation into the effects of leading-edge radius on gust-aerofoil interaction noise
(Cambridge University PressJournal of Fluid Mechanics, 2017-10-25)
This paper investigates the effects of local leading-edge geometry on unsteady aerofoil interaction noise. Analytical results are obtained by extending previous work for parabolic leading edges to leading edges of the form ...
Layer formation in horizontally forced stratified turbulence: Connecting exact coherent structures to linear instabilities
(Journal of Fluid Mechanics, 2017-12-10)
© 2017 Cambridge University Press. We consider turbulence in a stratified 'Kolmogorov' flow, driven by horizontal shear in the form of sinusoidal body forcing in the presence of an imposed background linear stable ...
Twistor theory at fifty: from contour integrals to twistor strings.
(Proceedings. Mathematical, physical, and engineering sciences, 2017-10-11)
Artificial Micro-Devices: Armoured Microbubbles and a Magnetically Driven Cilium
(University of CambridgeDAMTPQueens', 2017-10-01)
Micro-devices are developed for uses in targeted drug delivery and microscale manipulation.
Here we numerically and analytically study two promising devices in early stages of development.
Firstly, we study Armoured ...
Skyrmions -- beyond rigid body quantisation
(University of CambridgeDAMTPRobinson, 2017-10-01)
In the Skyrme model, nuclei are described as topological solitons known as Skyrmions. To make contact with nuclear data one must quantise these Skyrmions; most calculations to date have used rigid body quantisation, where ...
Bundling of elastic filaments induced by hydrodynamic interactions
(Physical Review Fluids, 2017-12-01)
Peritrichous bacteria swim in viscous fluids by rotating multiple helical flagellar filaments. As the bacterium swims forward, all its flagella rotate in synchrony behind the cell in a tight helical bundle. When the bacterium ...
Stability analysis for n -periodic arrays of fluid systems
(Physical Review Fluids, 2017-11-01)
© 2017 American Physical Society. A computational framework is proposed for the linear modal and nonmodal analysis of fluid systems consisting of a periodic array of n identical units. A formulation in either time or ...
Active particles in periodic lattices
(Institute of Physics (IoP) and Deutsche Physikalische GesellschaftNew Journal of Physics, 2017-11-01)
Both natural and artificial small-scale swimmers may often self-propel in environments subject to complex geometrical constraints. While most past theoretical work on low-Reynolds number locomotion addressed idealised ...
The grasshopper problem.
(Royal Society of LondonProceedings. Mathematical, physical, and engineering sciences, 2017-11-22)
We introduce and physically motivate the following problem in geometric combinatorics, originally inspired by analysing Bell inequalities. A grasshopper lands at a random point on a planar lawn of area 1. It then jumps ...
Vortex-ring-induced stratified mixing: Mixing model
(Cambridge University PressJournal of Fluid Mechanics, 2018-02-25)
The study of vortex-ring-induced mixing has been significant for understanding stratified turbulent mixing in the absence of a mean
flow. Renewed interest in this topic has prompted the development of a one-dimensional ...