Physics
Scientific paper
Dec 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...197.5108t&link_type=abstract
American Astronomical Society, 197th AAS Meeting, #51.08; Bulletin of the American Astronomical Society, Vol. 32, p.1489
Physics
Scientific paper
A new three-dimensional hydrodynamics code is under development to model the propagation of acoustically generated waves in stellar atmospheres, in particular the solar atmosphere. These waves are generated using an artificial pulsing boundary, representing the top of the convection zone. The resulting shock waves and subsequent oscillations and atmospheric heating are studied from sub-photospheric to coronal levels. We present the initial results from this code. The code is a development on a pre-existing 1-D Lagrangian code, developed at Iowa State University over the last 25 years to succesfully model the effects of acoustically generated waves on pulsating stars. We have added two horizontal dimensions, using Eulerian treatments. The original Lagrangian treatment in the vertical direction has been maintained for increased resolution of shock wave propagation, creating a Lagrangian/Eulerian combination code. We have further allowed for a wider ranging input of stellar parameters. This work is funded by a NASA grant through the SEC Program in Solar Physics.
Turner Gary Wayne
Willson Lee Anne
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