Search
Now showing items 71-80 of 151
The flow of rivers into lakes: Experiments and models
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-06-12)
This study considers the motion of river water flowing into a lake. The study has two parts: field observations of an interflowing river in Lake Iseo (Italy); and laboratory experiments on basins fed by an underflow. In ...
Nonlinear and non-modal stability of structures evolving in shear flows
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-04-08)
This thesis explores a range of stability techniques applied to fluid structures that develop in various constant density flows. In particular, the stability of nonlinear structures which develop in rotating plane Couette ...
Astrophysical tests of modified gravity
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-10-07)
Einstein's theory of general relativity has been the accepted theory of gravity for nearly a century but how well have we really tested it? The laws of gravity have been probed in our solar system to extremely high precision ...
Stratified shear flow: experiments in an inclined duct
(Journal of Fluid Mechanics, 2014-07-22)
We present results of experiments on stratified shear flow in an inclined duct. The duct connects two reservoirs of fluid with different densities, and contains a counterflow with a dense layer flowing beneath a less-dense layer ...
Solving Quasi-Variational Inequalities for Image Restoration with Adaptive Constraint Sets
(SIAMSIAM Journal on Imaging Sciences, 2014-07-11)
We consider a class of quasi-variational inequalities (QVIs) for adaptive image restoration, where the adaptivity is described via solution-dependent constraint sets. In previous work we studied both theoretical and numerical ...
Noise generation by turbulence-propeller interaction in asymmetric flow
(Cambridge University PressJournal of Fluid Mechanics, 2014)
This paper is concerned with a particular source of both broadband and tonal aeroengine noise, termed Unsteady Distortion Noise (UDN). UDN arises from the interaction between turbulent eddies, which occur naturally in the ...
The downward influence of stratospheric sudden warmings
(Journal of the Atmospheric Sciences, 2014-07-14)
The coupling between the stratosphere and the troposphere following two major stratospheric sudden warmings is studied in the Canadian Middle Atmosphere Model using a nudging technique by which the zonal mean evolution of ...
Zonally symmetric adjustment in the presence of artificial relaxation
(American Meteorological SocietyJournal of the Atmospheric Sciences, 2014-06-15)
Numerical experiments, presented in a companion paper, have been performed in which the zonal mean state of the stratosphere in a comprehensive, stratosphere-resolving, general circulation model is strongly relaxed (or ...
Entrainment in two coalescing axisymmetric turbulent plumes
(Journal of Fluid Mechanics, 2014-07-11)
A model of the total volume flux and entrainment occurring in two coalescing axisym-metric turbulent plumes is developed and compared to laboratory experiments. The
dynamical evolution of the two plumes is divided into three ...