In the present work we develop an approach to the classical kinematic fast dynamo problem for flows [32] in the real 3-dimensional space. We suggest a fluid flow that may possibly generate a magnetic field which energy grows exponentially fast with time in the present of slow diffusivity. In order to verify the construction we study a discrete system and prove that an analogous statement holds true for the Poincaré map of the provisional flow and vector fields in the plane. This problem falls into the framework of open dynamical systems with random holes
The fast dynamo growth rate for a C k+1 map or flow is bounded above by topological entropy plus a...
The paper deals with a simple spherical mean-field dynamo model of symmetric distribution of turbule...
4 pagesInternational audienceWe present a three-pronged numerical approach to the dynamo problem at ...
International audienceThe study of dynamo action in astrophysical objects classically involves two t...
In this work, we study a class of continuous generalisations of the kinematic Ponomarenko Dynamo, in...
International audienceThe ABC flow was originally introduced by Arnol'd to investigate Lagrangian ch...
A numerical study of the influence of slowly evolving velocity fields in the threshold of the dynam...
A existência de um efeito de um dínamo rápido é demonstrado para a equação cinemática de magneto-hid...
Dynamos wherein magnetic field is produced from velocity fluctuations are fundamental to our underst...
We first present basic results about advection, diffusion and amplification of a magnetic field by t...
This paper gives new results concerning magnetic field generation leading to a steady equilibrated s...
We investigate the Lagrangian mechanism of the kinematic ?fluctuation? magnetic dynamo in turbulent ...
In order better to understand the processes that lead to the generation of magnetic fields of finite...
We consider kinematic dynamo action in rapidly rotating Boussinesq convection just above onset. The ...
11 pagesInternational audienceA three-dimensional numerical computation of magnetohydrodynamic dynam...
The fast dynamo growth rate for a C k+1 map or flow is bounded above by topological entropy plus a...
The paper deals with a simple spherical mean-field dynamo model of symmetric distribution of turbule...
4 pagesInternational audienceWe present a three-pronged numerical approach to the dynamo problem at ...
International audienceThe study of dynamo action in astrophysical objects classically involves two t...
In this work, we study a class of continuous generalisations of the kinematic Ponomarenko Dynamo, in...
International audienceThe ABC flow was originally introduced by Arnol'd to investigate Lagrangian ch...
A numerical study of the influence of slowly evolving velocity fields in the threshold of the dynam...
A existência de um efeito de um dínamo rápido é demonstrado para a equação cinemática de magneto-hid...
Dynamos wherein magnetic field is produced from velocity fluctuations are fundamental to our underst...
We first present basic results about advection, diffusion and amplification of a magnetic field by t...
This paper gives new results concerning magnetic field generation leading to a steady equilibrated s...
We investigate the Lagrangian mechanism of the kinematic ?fluctuation? magnetic dynamo in turbulent ...
In order better to understand the processes that lead to the generation of magnetic fields of finite...
We consider kinematic dynamo action in rapidly rotating Boussinesq convection just above onset. The ...
11 pagesInternational audienceA three-dimensional numerical computation of magnetohydrodynamic dynam...
The fast dynamo growth rate for a C k+1 map or flow is bounded above by topological entropy plus a...
The paper deals with a simple spherical mean-field dynamo model of symmetric distribution of turbule...
4 pagesInternational audienceWe present a three-pronged numerical approach to the dynamo problem at ...