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Experiments

  • Excitation of gravity waves in solar-type stars (Application) [in progress]
    Description: The main goal of this project is to study the mecanism of both excitation and transport of internal gravity waves propagating in stellar radiative zones. These waves can be excited at the interface with a convective zone and are suspected to play a major role in the transport processes arising in stably stratified regions. For example, an efficient transport by internal waves is required to reproduce both the abundances of light elements in low-mass stars and the quasi-solid body rotation of Sun's core revealed by heliosismology. By the means of direct numerical simulations in 2-D and 3-D, we investigate the dynamics of the system shaped by a radiative zone located below a convective one (as in the Sun). We want to adress both the spectrum and amplitudes of internal waves excited by the convective plumes entering in the stable region. Once known, we will be able to quantify the resulting transport induced by these waves.
    Results:
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  • Dynamos in fully convective stars (Application) [in progress]
    Description:
    Results:

Publications

Collaborations

    Success stories and benefits from Grid'5000

    last update: 2008-05-22 10:56:12

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