This paper is devoted to the well-posedness of the stationary 3d Stokes-Coriolis system set in a half-space with rough bottom and Dirichlet data which does not decrease at space infinity. Our system is a linearized version of the Ekman boundary layer system. We look for a solution of infinite energy in a space of Sobolev regularity. Following an idea of Gérard-Varet and Masmoudi, the general st...

In this paper the influence of an impressed Coriolis force field on the configuration of a turbulent Rayleigh-Bénard convection problem is investigated in an experimental and numerical study. The main purpose of both studies lie on the analysis of a possible stabilising effect of a Coriolis acceleration on the turbulent unsteady structures inside the fluid. The relative Coriolis acceleration wh...

Numerical geodynamo simulations capture several features of the spatial and temporal geomagnetic field variability on historical Holocene timescales. However, a recent analysis questioned ability these numerical models to comply with long-term paleomagnetic behavior. Analyzing suite 50 models, we present here first known reproduce salient aspects paleosecular variation time-averaged behavior si...

Rotation modulates turbulence causing columnar structuring of a turbulent flow in case of sufficiently strong rotation. This yields significant changes in the flow characteristics and dispersion properties, which makes rotational turbulence modulation particularly relevant in the context of atmospheric and oceanic flows. Here we investigate the canonical flow of turbulence in a periodic box, su...

We consider a class of stationary and axisymmetric wormhole spacetimes that is closely related to, but not identical with, the Teo wormholes. fix point $p$ (observation event) timelike curve $\ensuremath{\gamma}$ (worldline light source), we characterize set all past-oriented lightlike geodesics from to $\ensuremath{\gamma}$. As any such geodesic corresponds an image source on observer's sky, t...

In this paper Robe-finite straight segment model is analyzed under the effects of viscosity and perturbations in Coriolis centrifugal forces. We have taken first primary $P_{1}$ as a rigid spherical shell $m_{1}$ filled with viscous, homogeneous incompressible fluid density $\rho _{1}$ , second $P_{2}$ finite length $2l$ . A third body mass $m_{3}$ moving inside small solid sphere _{3}$ prove h...

Numerical simulations of the geodynamo (and other planetary dynamos) have made significant progress in recent years. As computing power has advanced, some new models claim to be ever more appropriate for understanding Earth's core dynamics. One measure success such is ability replicate expected balance between forces operating within core; Coriolis and Lorentz are predicted most important. The ...