摘要
A time-dependent method and a practical differentiating scheme, cerning both fluid and magnetic field in the solar meridian, have been deveioped to obtain the transonic, tran-Alfvenic solution for background solar wind with the formation of heliospheric current sheet. The so-called projected-characteristic boundary condition in spherical coordinate is further studied and successfully used at the inner and outer boundaries. It is shown that a dosed magnetic field is drawn outward by the expanding solar wind and changes gradually into the quasi-helmet-type. The interaction between the fluid and magnetic fields is identical with some supposed mechanism of the corona. The simulation results also show the possible distributions of the dynamic and magnetic parameters in the solar meridian.
A time-dependent method and a practical differentiating scheme, cerning both fluid and magnetic field in the solar meridian, have been deveioped to obtain the transonic, tran-Alfvenic solution for background solar wind with the formation of heliospheric current sheet. The so-called
基金
Project supported by the National Natural Science Foundation of China
