- Read Waves and Mean Flows (Cambridge Monographs on Mechanics) Ebook Free
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- Cambridge Monographs on Mechanics: Waves and Mean Flows : Oliver Buhler :
- Fluid Mechanics of Airflow over Hills: Turbulence, Fluxes, and Waves in the Boundary Layer
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Bekijk video. Auteur: Alex D. Uitgever: Cambridge University Press. Samenvatting Wave Interactions and Fluid Flows is a coherent, up-to-date and comprehensive account of theory and experiment on wave-interaction phenomena, both in fluids at rest and in shear flows. On the one hand, this includes water waves, internal waves, their evolution and interaction and associated wave-driven mean flows; on the other, phenomena of nonlinear hydrodynamic stability, especially those leading to the onset of turbulence.
Close similarities - and crucial differences - exist between these two classes of phenomena and their treatment in this single study provides a particularly valuable bridge between more specialised, but related, disciplines. As a result, this unique book will appeal to researchers and graduate students of fluid mechanics in its widest sense, including the study of wave-interaction phenomena in such diverse fields as meteorology, aeronautical and hydraulic engineering, optics, solar physics and population dynamics. Dr Craik is an active researcher of long-standing at the University of St Andrews and has wide experience in the field of fluid mechanics.
Toon meer Toon minder. Recensie s 'The theme that the author has adopted for his monograph, as reflected in its title, has enabled him to draw together, in a coherent and successful manner, a large amount of material that spans a range of, perhaps not obviously related, fluid-dynamical phenomena.
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American Meteorological Society. Betrokkenen Auteur Alex D. Craik Redacteur Mark J. Ablowitz Co-redacteur A. Particle dispersion by random waves in rotating shallow water. Muller, C. Saturation of the internal tides and induced mixing in the abyssal ocean. Journal of Physical Oceanography, 39, Barreiro, A. Longshore current dislocation on barred beaches. Journal of Geophysical Research - Oceans, , C Wave-vortex interactions. Fronts, waves and vortices in geophysics , ed.
Flor, Springer,. Lecture notes in physics, in press. Hasha, A. F, Gravity wave refraction by three-dimensionally varying winds and the global transport of angular momentum.
Journal of the Atmospheric Sciences, 65, Instability and focusing of internal tides in the deep ocean. Large deviation theory and extreme waves file. Oliver, M. Transparent boundary conditions as dissipative subgrid closures for the spectral representation of scalar advection by shear flows. Journal of Mathematical Physics, 48, , 26pp.
Impulsive fluid forcing and water strider locomotion. Wave capture and wave—vortex duality. Wave-mean interaction theory.magim.ru/scripts/divorces/2992.php
Read Waves and Mean Flows (Cambridge Monographs on Mechanics) Ebook Free
Nonlinear Waves in Fluids , ed. Remote recoil: a new wave—mean interaction effect. Equatorward propagation of inertia—gravity waves due to steady and intermittent sources. Journal of the Atmospheric Sciences, 60, A short paper motivated by reading about some conceptual issues when interpreting potential energy spectra in the atmosphere.
Here it is pointed out that meridional propagation alone leads to non-uniform energy spectra due to the variation of the Coriolis parameter with latitude. Statistical mechanics of strong and weak point vortices in a cylinder.
Physics of Fluids, 14, Onsager made a famous analogy between the emergence of strong vortices in turbulence and negative temperature states in the statistical mechanics of point vortices, which predicts clumping together of like-signed vortices. The paper combines direct numerical simulations of the point vortex system with Monte-Carlo evaluations of the relevant integrals of the statistical mechanics and after some tricky details remarkably good agreement is found.
Wave-driven currents and vortex dynamics on barred beaches. I had attended the same school as a student in and this was the first time I was able to return.
Cambridge Monographs on Mechanics: Waves and Mean Flows : Oliver Buhler :
Crucial to those papers was a homogeneous wave field in the alongshore direction, which made averaging in that direction a natural step to take. However, when the waves are not homogeneous then there is a strong generation of extra vorticity that is missed by the earlier theory. It was great fun working out this theory and I am glad that we were able to show it to Longuet-Higgins in person, who was very kind and positive about this new development. On the vorticity transport due to dissipating or breaking waves in shallow-water flow.
In I left Cambridge and moved to St Andrews, where I spent more time thinking about two-dimensional vortex dynamics and dissipative wave-vortex interactions. Wave breaking is an important form of wave dissipation, but the lack of smooth solutions makes it harder to derive a clear theory for it.
Here this was achieved for the shallow-water system, with discontinuous shocks standing in for true wave breaking. I wrote a finite-volume code for the dynamics and was able to make theory and simulations agree.
Fluid Mechanics of Airflow over Hills: Turbulence, Fluxes, and Waves in the Boundary Layer
The most important take-home message was that the local conservation of mass and momentum were crucial to get the correct vorticity generation. This is trivial mathematically, but can be a challenge for a numerical simulation. On shear-generated gravity waves that reach the mesosphere. Part ii: wave propagation. Journal of the Atmospheric Sciences, 56, The second part of this study investigated the subsequent propagation of the emitted internal waves through a sheared atmosphere using ray tracing.
The strongest effects are due to wave reflection and wave breaking, but radiative damping and viscosity were also included. Part i: wave generation.
PhD thesis work on the re-radiation of internal gravity waves from 3d patches of mixed fluid in the lower stratosphere. The pancake-shaped patches are envisaged to stem from prior episodes of clear-air turbulence and they collapse whilst emitting internal waves. Most of this was simple linear wave theory, but we did compare to nonlinear simulations in 2d. There is a nice definition of a complex wave amplitude function in this paper, which helps a lot in describing the wave field, and the exact 2d pseudomomentum diagnostic equation seems to have been new as well. Haynes P. Constraints on the mean mass transport across potential vorticity contours.
An outgrowth from the paper below, giving a better and simpler dynamical underpinning for the bounds on the mass flux. Mo, R. Permeability of the stratospheric vortex edge: on the mean mass flux due to thermally dissipating, steady, non-breaking Rossby waves. Quarterly Journal of the Royal Meteorological Society, , A paper on the question as to how permeable the sloping edge of the stratospheric polar vortex is to lateral mass fluxes, which are under tight dynamical constraints due to angular momentum conservation and related effects.
There had been some statements in the chemical literature that such permeability could be very strong and hence make the vortex a very leaky vessel indeed. In contrast, this paper argued for some pretty restrictive upper bounds on such lateral mass flux. On non-dissipative wave—mean interactions in the atmosphere or oceans.
This paper contains the main theoretical results from my PhD thesis, which I defended in In those days it was possible to publish your thesis work more slowly than today, perhaps! In hindsight, this very long paper should have been split into two papers dealing with the 2d shallow water and the 3d Boussinesq equations separately; that would have been more readable.
The main content of the paper was to show that the traditional link between wave dissipation and irreversible forcing of a mean flow was limited to simple geometries involving zonal averaging and, therefore, a zonally symmetric mean flow. In any more localized situation, e.