AAS 195th Meeting, January 2000
Session 50. Stellar Atmospheres
Display, Thursday, January 13, 2000, 9:20am-6:30pm, Grand Hall

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[50.04] Three Dimensional Computational Simulations of Convection in AGB Stars

M.L. Jacobs, D.H. Porter, P.R. Woodward (Dept of Astronomy, University of Minnesota)

Three dimensional, turbulent numerical simulations of entire red giant stars are presented. Preliminary results include highly dipolar global convective flows and pulsational motions driven purely by convection in models that have been run for many sound crossing times after achieving convective equlibrium. Convective motions in these models are directly solved using the Piecewise Parabolic Method (PPM) hydrodynamic code at the highest mesh resoltions currently achievable ( > 100 million cubic zones ) using the computer resources at the National Center for Supercomputing Applications (NCSA). Discussion includes the current status of the research including self-consistant gravity, an improved photosphere and equation of state. We also present a direct comparison between one dimensional and three dimensional models.

If you would like more information about this abstract, please follow the link to http://www.lcse.umn.edu/research/RedGiant/. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: mjacobs@astro.spa.umn.edu

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