Journal Article

Non-linear dynamics of gravity wave driven flows in the solar radiative interior

T. M. Rogers, K. B. MacGregor and G. A. Glatzmaier

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 387, issue 2, pages 616-630
Published in print June 2008 | ISSN: 0035-8711
Published online May 2008 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.13289.x
Non-linear dynamics of gravity wave driven flows in the solar radiative interior

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We present results of non-linear numerical simulations of gravity wave driven shear flow oscillations in the equatorial plane of the solar radiative interior. These results show that many of the assumptions of quasi-linear theory are not valid. When only two waves are forced (prograde and retrograde), oscillatory mean flow is maintained; but critical layers often form and are dynamically important. When a spectrum of waves is forced, the non-linear wave–wave interactions are dynamically important, often acting to decrease the maintenance of a mean flow. The (in)coherence of such wave–wave interactions must be taken into account when describing wave-driven mean flows.

Keywords: hydrodynamics; waves; Sun: interior

Journal Article.  9547 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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