Computer Science – Performance
Scientific paper
May 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998nasa.reptv....d&link_type=abstract
Technical Report, NASA/CR-1998-207988; NAS 1.26:207988
Computer Science
Performance
Dynamo Theory, Magnetic Field Configurations, Electrodynamics, Magnetic Fields, Diffusion Waves, Cosmic Rays, Compressibility, Magnetohydrodynamics, Velocity Distribution, Stratification, Nonlinear Feedback
Scientific paper
In this first year of our investigation we explored the role of compressibility and stratification in the dissipation of magnetic fields. The predictions of Mean Field Electrodynamics have been questioned because of the strong feedback of small scale magnetic structure on the velocity fields. In 2-D, this nonlinear feedback results in a lengthening of the turbulent decay time. In 3-D alpha-quenching is predicted. Previous studies assumed a homogeneous fluid. This first year we present recent results from 2-D compressible MHD decay simulations in a highly stratified atmosphere that more closely resembles to solar convection zone. We have applied for NCCS T3E time to assist in the performance of our 3-D calculations.
DeLuca Edward E.
Hurlburt Neal
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