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- Julien Baerenzung, HÃ©lÃ¨ne Politano, Yannick Ponty, Annick Pouquet
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2008

We present a version of a dynamical spectral model for large eddy simulation based on the eddy damped quasinormal Markovian approximation [S. A. Orszag, in, edited by R. Balian, Proceedings of Lesâ€¦ (More)

Studying strongly turbulent flows is still a major challenge in fluid dynamics. It is highly desirable to have comparable experiments to obtain a better understanding of the mechanisms generatingâ€¦ (More)

- Yannick Ponty, Pablo D. Mininni, David C. Montgomery, J F Pinton, HÃ©lÃ¨ne Politano, Annick Pouquet
- Physical review letters
- 2005

We present a three-pronged numerical approach to the dynamo problem at low magnetic Prandtl numbers P(M). The difficulty of resolving a large range of scales is circumvented by combining directâ€¦ (More)

- Yannick Ponty, J-P Laval, BÃ©rengÃ¨re Dubrulle, FranÃ§ois Daviaud, J F Pinton
- Physical review letters
- 2007

We report direct numerical simulations of dynamo generation for flow generated using a Taylor-Green forcing. We find that the bifurcation is subcritical and show its bifurcation diagram. We connectâ€¦ (More)

Rolls in finite Prandtl number rotating convection with free-slip top and bottom boundary conditions are shown to be unstable with respect to small angle perturbations for any value of the rotationâ€¦ (More)

- Yannick Ponty, Franck Plunian
- Physical review letters
- 2011

The dynamo equations are solved numerically with a helical forcing corresponding to the Roberts flow. In the fully turbulent regime the flow behaves as a Roberts flow on long time scales, plusâ€¦ (More)

- S Kreuzahler, Yannick Ponty, Nicolas Plihon, Holger Homann, Rainer Grauer
- Physical review letters
- 2017

We present results from consistent dynamo simulations, where the electrically conducting and incompressible flow inside a cylinder vessel is forced by moving impellers numerically implemented by aâ€¦ (More)

- J. D. Gibbon, Anupam Gupta, +6 authors Julia E Stawarz
- Physical review. E
- 2016

It is shown how suitably scaled, order-m moments, D_{m}^{Â±}, of the ElsÃ¤sser vorticity fields in three-dimensional magnetohydrodynamics (MHD) can be used to identify three possible regimes forâ€¦ (More)

A three-dimensional numerical computation of magnetohydrodynamic dynamo behavior is described. The dynamo is mechanically forced with a driving term of the Taylor-Green type. The magnetic fieldâ€¦ (More)

This paper considers magnetic field generation by a fluid flow in a system referred to as the Archontis dynamo: a steady nonlinear magnetohydrodynamic (MHD) state is driven by a prescribed bodyâ€¦ (More)