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Cristini, A, Hirschi, R, Georgy, C, Meakin, C, Arnett, D and Viallet, M (2015) Linking 1D Stellar Evolution to 3D Hydrodynamical Simulations. Proceedings of the International Astronomical Union, 9 (S307). pp. 98-99. ISSN 1743-9221

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Abstract

In this contribution we present initial results of a study on convective boundary mixing (CBM) in massive stellar models using the GENEVA stellar evolution code. Before undertaking costly 3D hydrodynamic simulations, it is important to study the general properties of convective boundaries, such as the: composition jump; pressure gradient; and `stiffness'. Models for a 15Mo star were computed. We found that for convective shells above the core, the lower (in radius or mass) boundaries are `stiffer' according to the bulk Richardson number than the relative upper (Schwarzschild) boundaries. Thus, we expect reduced CBM at the lower boundaries in comparison to the upper. This has implications on flame front propagation and the onset of novae.

Item Type: Article
Additional Information: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Cambridge University Press at http://dx.doi.org/10.1017/S1743921314006371 - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: convection, hydrodynamics, stellar dynamics, turbulence, stars, evolution, interiors
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
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Depositing User: Symplectic
Date Deposited: 23 Apr 2015 10:09
Last Modified: 26 May 2017 12:50
URI: https://eprints.keele.ac.uk/id/eprint/434

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