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Ill posedness of force-free electrodynamics in Euler potentials
(American Physical Society, 2017-03-06)
We prove that the initial value problem for force-free electrodynamics in Euler variables is not well posed. We establish this result by showing that a well-posedness criterion provided by Kreiss fails to hold for this ...
Forced oscillations with continuum models of atomic force microscopy
(2012-12-01)
The dynamics of the AFM-atomic force microscope follows a model based in a Timoshenko cantilever beam with a tip attached at the free end and acting with the surface of a sample. General boundary conditions arise when the ...
Axisymmetric force-free magnetospheres and theoretical models beyond general relativity: Magnetic moment of axion stars
(Pleiades Publishing, 2019-11)
Abstract: The magnetosphere structure of a magnetar is considered in the context of a theory of gravity with dynamical torsion field beyond the standard General Relativity (GR) with the purpose of determining in a theoretical ...
Análisis numérico de ecuaciones force-free en potenciales de Euler
(2021-04)
En este trabajo se presenta un estudio numérico de las ecuaciones de Force-Free en Potenciales de Euler las cuales conforman un sistema de ecuaciones mal puesto o débilmente hiperbólico. Esta característica da lugar a la ...
Vocal folds vibrations with a three-dimensional deformable model
(2006-12-01)
In this work a computational method is presented to simulate the movements of vocal folds in three dimensions. The proposed model consists of a mesh free structure where each vertex is connected its neighbor through a group ...
Vocal folds vibrations with a three-dimensional deformable model
(2006-12-01)
In this work a computational method is presented to simulate the movements of vocal folds in three dimensions. The proposed model consists of a mesh free structure where each vertex is connected its neighbor through a group ...
Free and forced wave motion in a two-dimensional plate with radial periodicity
(2021-11-01)
In many practical engineering situations, a source of vibrations may excite a large and flexible structure such as a ship’s deck, an aeroplane fuselage, a satellite antenna, a wall panel. To avoid transmission of the ...
Novel scheme for simulating the force-free equations: Boundary conditions and the evolution of solutions towards stationarity
(American Physical Society, 2017-09-11)
Force-free electrodynamics (FFE) describes a particular regime of magnetically dominated relativistic plasmas, which arises on several astrophysical scenarios of interest such as pulsars or active galactic nuclei. In this ...
Forced oscillations with continuum models of atomic force microscopy
(2012-12-01)
The dynamics of the AFM-atomic force microscope follows a model based in a Timoshenko cantilever beam with a tip attached at the free end and acting with the surface of a sample. General boundary conditions arise when the ...