Statistics – Computation
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.117..165y&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 117, no. 1, Dec. 1985, p. 165-171.
Statistics
Computation
10
Boundary Value Problems, Magnetic Monopoles, Magnetohydrodynamics, Computational Astrophysics, Solenoids
Scientific paper
Recent numerical calculations of multidimensional MHD solutions revealed the problem that the solutions contain fictitious magnetic monopoles. Their amounts are larger than attributable to numerical discretization. It is shown that the fictitious presence of magnetic monopoles is due to improper prescription of the boundary data. For a solution of an initial-boundary value problem of magnetohydrodynamics to satisfy the requirement of magnetic solenoidality, the initial data must be constrained by Gauss's law of magnetic solenoidality and the boundary data must be constrained by Faraday's law of magnetic induction. These are necessary and sufficient conditions. Otherwise, magnetic monopoles will appear erratically in the domain of computation, either being contained in the initial data or being introduced from the boundary data.
Dryer Murray
Yeh Tyan
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