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Now showing items 21-30 of 40
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 ...
New integrable models and analytical solutions in f(R) cosmology with an ideal gas
(American Physical SocietyPhysical Review D - Particles, Fields, Gravitation and Cosmology, 2018-01-23)
In the context of f(R)-gravity with a spatially flat FLRW metric containing an ideal fluid, we use the method of invariant transformations to specify families of models which are integrable. We find three families of f(R) ...
Mathematical Imaging Tools in Cancer Research - From Mitosis Analysis to Sparse Regularisation
(University of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsRobinson College, 2018-02-24)
This dissertation deals with customised image analysis tools in cancer research. In the field of biomedical sciences, mathematical imaging has become crucial in order to account for advancements in technical equipment and ...
The effect of gas on multi-stage mixed-flow centrifugal pumps
(University of CambridgeDepartment of Applied Mathematics and Theoretical PhysiscsDarwin, 2018-03-24)
The production from an oil reservoir is a mixture of liquids (oil and water) and gas, and is often maintained by using a pump placed in the well to ensure a continuous flow to the surface. Electrical Submersible Pumps ...
Geographic and demographic transmission patterns of the 2009 A/H1N1 influenza pandemic in the United States
(University of CambridgeApplied Mathematics and Theoretical PhysicsKing's, 2018-05-19)
This thesis describes how transmission of the 2009 A/H1N1 influenza pandemic in the United States varied geographically, with emphasis on population distribution and age structure. This is made possible by the availability ...
An analytically-based method for predicting the noise generated by the interaction between turbulence and a serrated leading edge
(ElsevierJournal of Sound and Vibration, 2018-05-26)
This paper considers the interaction of turbulence with a serrated leading edge. We investigate the noise
produced by an aerofoil moving through a turbulent perturbation to uniform flow by considering the scattered
pressure ...
Quantized Skyrmions from SU(4) weight diagrams
(Physical Review C, 2018-03-06)
© 2018 authors. Published by the American Physical Society. Starting from solutions of the lightly bound Skyrme model, we construct many new Skyrmion solutions of the standard Skyrme model with tetrahedral or octahedral ...
Relativistic magnetised perturbations: Magnetic pressure versus magnetic tension
(IoPClassical and Quantum Gravity, 2018-05-16)
We study the linear evolution of magnetised cosmological perturbations in the post-recombination epoch. Using full general relativity and adopting the ideal magnetohydrodynamic approximation, we refine and extend the ...
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 ...
Horizontal locomotion of a vertically flapping oblate spheroid
(Cambridge University PressJournal of Fluid Mechanics, 2018-04-10)
We consider the self-induced motions of three-dimensional oblate spheroids of density $\rho_s$ with varying aspect ratios $AR=b/c \leq 1$, where $b$ and $c$ are the spheroids' centre-pole radius and centre-equator radius ...