Exploració per autor "García González, Fernando"
Ara es mostren els items 18-35 de 35
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Long term time dependent frequency analysis of chaotic waves in the weakly magnetized spherical Couette system
(2021-04)
Article
Accés obertThe long therm behavior of chaotic flows is investigated by means of time dependent frequency analysis. The system under test consists of an electrically conducting fluid, confined between two differentially rotating ... -
Magnetically induced gluing bifurcations of three-tori in spherical Couette flows
(American Institute of Physics (AIP), 2023-11-27)
Article
Accés obertThe global dynamics of three-tori associated with homoclinic/heteroclinic global (infinite period) bifurcations are investigated for the magnetized spherical Couette problem, a paradigmatic model in geo- and astrophysical ... -
Modulated rotating waves and triadic resonances in spherical fluid systems: The case of magnetized spherical Couette flow
(2021-04)
Article
Accés obertThe existence of triadic resonances in the magnetized spherical Couette system is related to the development of modulated rotating waves, which are quasiperiodic flows understood in terms of bifurcation theory in systems ... -
Modulated rotating waves in the magnetised spherical Couette system
(2019-12)
Article
Accés obertWe present a study devoted to a detailed description of modulated rotating waves (MRW) in the magnetised spherical Couette system. The set-up consists of a liquid metal confined between two differentially rotating spheres ... -
Numerical simulations of thermal convection in rotating spherical shells under laboratory conditions
(2014-03-05)
Article
Accés restringit per política de l'editorialAn exhaustive study, based on numerical three-dimensional simulations, of the Boussinesq thermal convection of a fluid confined in a rotating spherical shell is presented. A moderately low Prandtl number fluid (ro = 0.1) ... -
Numerical study of the onset of thermosolutal convection in rotating spherical shells
(2012-06-01)
Article
Accés obertThe influence of an externally enforced compositional gradient on the onset of convection of a mixture of two components in a rotating fluid spherical shell is studied for Ekman numbers E = 10−3 and E = 10−6, Prandtl numbers ... -
On the onset of low Prandtl number convection in rotating spherical shells: non-slip boundary conditions
(2008-01-15)
Article
Accés obertAccurate numerical computations of the onset of thermal convection in wide rotating spherical shells are presented. Low-Prandtl-number (σ) fluids, and non-slip boundary conditions are considered. It is shown that at small ... -
Oscillatory convection in rotating spherical shells: low Prandtl number and non-slip boundary conditions
(2015-10-01)
Article
Accés obertA five-degree model, which reproduces faithfully the sequence of bifurcations and the type of solutions found through numerical simulations of the three-dimensional Boussinesq thermal convection equations in rotating ... -
Polar waves and chaotic flows in thin rotating spherical shells
(2019-07-08)
Article
Accés obertConvection in rotating spherical geometries is an important physical process in planetary and stellar systems. Using continuation methods at a low Prandtl number, we find both strong equatorially asymmetric and symmetric ... -
Radial collocation methods for the onset of convection in rotating spheres
(2016-03-01)
Article
Accés obertThe viability of using collocation methods in radius and spherical harmonics in the angular variables to calculate convective flows in full spherical geometry is examined. As a test problem the stability of the conductive ... -
Rotating waves arising from the instability of magnetized spherical Couette flows
(2022)
Text en actes de congrés
Accés obertRotating waves of various azimuthal wavenumbers appear in magnetized spherical Couette flows in time- dependent states. The criteria for the flow to enter a time-dependent state are determined by the values of Reynolds ... -
Rotating waves arising from the instability of magnetized spherical Couette flows
(2022)
Comunicació de congrés
Accés obertRotating waves of various azimuthal wavenumbers appear in magnetised spherical Couette flows in time-dependent states. The criteria for the flow to enter a time-dependent state are determined by the values of Reynolds and ... -
Stability analysis for the onset of convection in rotating fluid binary mixtures in spherical shells
(2011)
Text en actes de congrés
Accés obertThe stability analysis of the basic conductive state of a rotating binary mixture of two fluids bounded by spherical shells is studied. The Boussinesq approximation of the mass conservation, Navier-Stokes, energy and ... -
Thermal convection in autogravitating spheres at low Ekman numbers
(2015)
Comunicació de congrés
Accés obert -
Thermal convection in rotating spherical shells: Temperature-dependent internal heat generation using the example of triple-a burning in neutron stars
(2018-12-10)
Article
Accés obertWe present an extensive study of Boussinesq thermal convection including a temperature-dependent internal heating source, based on numerical three-dimensional simulations. The temperature dependence mimics triple-a nuclear ... -
Two computational approaches for the simulation of fluid problems in rotating spherical shells
(2014)
Article
Accés obertMany geophysical and astrophysical phenomena such as magnetic fields generation, or the differential rotation observed in the atmospheres of the major planets are studied by means of numerical simulations of the Navier-Stokes ... -
Two computational approaches for the simulation of fluid problems in rotating spherical shells
(2014)
Comunicació de congrés
Accés obertMany geophysical and astrophysical phenomena such as magnetic fields generation, or the differential rotation observed in the atmospheres of the major planets are studied by means of numerical simulations of the Navier-Stokes ... -
Weak branch and multimodal convection in rapidly rotating spheres at low Prandtl number
(2021-12-06)
Article
Accés obertThe focus of this study is to investigate primary and secondary bifurcations to weakly nonlinear flows (weak branch) in convective rotating spheres in a regime where only strongly nonlinear oscillatory sub- and supercritical ...
