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3-D star He-shell flash convection and H entrainment

Detailed description of the entrainment process in converged 3-D simulations in full spherical geometry.
Project summary
In this paper Woodward, Herwig & Lin demonstrate the PPMstar capabiltiy to construct converged entrainment simulations at the extremely stiff upper convective boundary when H-rich material may be ingested. This situation occurs in very-late thermal pulse post-AGB stars and in low-Z AGB stars. As an important result we provide evidence that full 4Pi geometry and 3-D simulations are required for H-ingestion simulations, and we provide a quantitative entrainment rate from our simulations. The numerical method is described in detail
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Paul R. Woodward et al. 2015 ApJ 798 49. doi:10.1088/0004-637X/798/1/49, Received 14 July 2013, accepted for publication 12 August 2014. Published 19 December 2014.