A three-dimensional hydrodynamic model of acoustic wave propagation through the non-magnetic solar atmosphere

Details A three-dimensional hydrodynamic model of acoustic wave propagation through the non-magnetic solar atmosphere A three-dimensional hydrodynamic model of acoustic wave propagation through the non-magnetic solar atmosphere

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003phdt.........4t&link_type=abstract

Thesis (PhD). IOWA STATE UNIVERSITY, Source DAI-B 64/03, p. 1289, Sep 2003, 397 pages.

Physics

Scientific paper

A new three-dimensional hydrodynamics code has been developed 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. The initial results from this code are presented. The new code has been developed from a pre-existing one- dimensional Lagrangian hydrodynamic code, developed at Iowa State University over the last 25 years to successfully model the effects of acoustically generated waves propagating through the atmospheres of large pulsating stars. This work includes the addition of the two horizontal dimensions; these dimensions receive 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. The new code further allows for a wider ranging input of stellar parameters, making it applicable to solar type stars.

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