Computer Science – Numerical Analysis
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apm..workq....o&link_type=abstract
In its Proceedings of the US-Japan Workshop on Advanced Plasma Modeling 7 p (SEE N87-26627 20-75)
Computer Science
Numerical Analysis
Computerized Simulation, Field Aligned Currents, Interplanetary Magnetic Fields, Solar Terrestrial Interactions, Solar Wind, Three Dimensional Flow, Boundary Conditions, Boundary Value Problems, Coding, Magnetic Field Configurations, Numerical Analysis, Three Dimensional Models, Time Dependence
Scientific paper
A high resolution and time-dependent three dimensional magnetohydrodynamic (MHD) model was used to study the interaction between the solar wind and the Earth's magnetosphere during intervals when the interplanetary magnetic field (IMF) has both a By and a Bz component. The MHD equations are solved by the two step Lax-Wendroff scheme as an initial value problem. The MHD code was run until a quasi-steady state magnetospheric configuration resulted. Numerical problems in the present calculations are particularly associated with the near-Earth and tail boundary conditions. The fixed boundary condition is used near the Earth. Therefore, the field-aligned currents do not make closed loops in the ionosphere and the feedback processes from the ionosphere can not be treated. The tail boundary is not so far in the present model, but the real magnetotail is known to be much longer from the satellite observations. Phenomena in the distant magnetotail may have serious effects on the magnetosphere near the Earth through the magnetic field lines. These distant magnetotail dynamics are waiting future study.
Ashour-Abdalla Maha
Dawson John M.
Ogino Tatsuki
Walker Ray J.
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