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A two-dimensional MHD global coronal model - Steady-state streamersA 2D, time-dependent, numerical, MHD model for the simulation of coronal streamers from the solar surface to 15 solar is presented. Three examples are given; for dipole, quadrupole and hexapole (Legendre polynomials P1, P2, and P3) initial field topologies. The computed properties are density, temperature, velocity, and magnetic field. The calculation is set up as an initial-boundary value problem wherein a relaxation in time produces the steady state solution. In addition to the properties of the solutions, their accuracy is discussed. Besides solutions for dipole, quadrupole, and hexapole geometries, the model use of realistic values for the density and Alfven speed while still meeting the requirement that the flow speed be super-Alfvenic at the outer boundary by extending the outer boundary to 15 solar radii.
Document ID
19930049621
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wang, A.-H.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Wu, S. T.
(Alabama Univ. Huntsville, United States)
Suess, S. T.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Poletto, G.
(Arcetri Osservatorio Florence, Italy)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Solar Wind Seven; Proceedings of the 3rd COSPAR Colloquium, Goslar, Germany, Sept. 16-20, 1991 (A93-33554 13-92)
Publisher: Pergamon Press
Subject Category
Solar Physics
Accession Number
93A33618
Funding Number(s)
CONTRACT_GRANT: NAGW-9
Distribution Limits
Public
Copyright
Other

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