Exploració per autor "García González, Fernando"
Ara es mostren els items 24-35 de 35
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On the onset of low Prandtl number convection in rotating spherical shells: non-slip boundary conditions
Net Marcé, Marta; García González, Fernando; Sánchez Umbría, Juan (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
García González, Fernando; Sánchez Umbría, Juan; Dormy, Emmanuel; Net Marcé, Marta (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
García González, Fernando; Chambers, Frank; Watts, Anna (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
Sánchez Umbría, Juan; García González, Fernando; Net Marcé, Marta (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
Ogbonna, Jude; García González, Fernando; Gundrum, Thomas; Stefani, Frank (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
Ogbonna, Jude; García González, Fernando; Gundrum, Thomas; Stefani, Frank (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
Net Marcé, Marta; García González, Fernando; Sánchez Umbría, Juan (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
Net Marcé, Marta; García González, Fernando; Sánchez Umbría, Juan (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
García González, Fernando; Chambers, Frank; Watts, Anna (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
García González, Fernando; Dormy, Emmanuel; Sánchez Umbría, Juan; Net Marcé, Marta (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 ... -
Two computational approaches for the simulation of fluid problems in rotating spherical shells
García González, Fernando; Dormy, Emmanuel; Sánchez Umbría, Juan; Net Marcé, Marta (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 ... -
Weak branch and multimodal convection in rapidly rotating spheres at low Prandtl number
García González, Fernando; Stefani, Frank; Dormy, Emmanuel (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 ...