Potential magnetic field calculator for solar physics applications using staggered grids
Potential magnetic field calculator for solar physics applications using staggered grids
复制标题
使用交错网格的太阳能物理应用的势磁场计算器
DOI:
10.1051/0004-6361/201834684
复制
发表时间:
2019
影响因子:
6.5
通讯作者:
Boocock C
中科院分区:
文献类型:
--
作者:
Boocock C
A program has been designed to generate accurately a potential magnetic field on a staggered grid by extrapolating the magnetic field normal to the photospheric surface. The code first calculates a magnetic potential using the Green’s function method and then uses a finite differencing scheme to calculate the magnetic field from the potential. A new finite differencing formula was derived which accounts for grid staggering; it is shown that this formula gives a numerical approximation that is closest to the real potential field. It is also shown that extending the region over which normal photospheric field is specified can improve the accuracy of the potential field produced. The program is a FORTRAN 90 code that can be used to generate potential magnetic field inputs for Lare3d and other MHD solvers that use a staggered grid for magnetic field components. The program can be parallelised to run quickly over multiple computing cores. The code and supporting description are provided in the appendices.
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DOI:
--
发表时间:
2008
期刊:
Proceedings of the International Astronomical Union
影响因子:
--
作者:
L. Ofman;M. Selwa
通讯作者:
M. Selwa
DOI:
--
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1999
期刊:
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--
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通讯作者:
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1986
期刊:
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影响因子:
4.8
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通讯作者:
E. Shurgalina
影响因子:
6.5
作者:
Smith P
通讯作者:
Smith P