An Electric-field-driven Global Coronal Magnetohydrodynamics Simulation Model Using Helioseismic and Magnetic Imager Vector-magnetic-field Synoptic Map Data

Abstract We present the simulation methodology and results of our new data-driven global coronal magnetohydrodynamics (MHD) model. In this model, solar-surface electric field is first calculated such that curl will satisfy both induction equation given temporal variations magnetic field. use synoptic maps Helioseismic Magnetic Imager three-component vector-magnetic-field data to specify magnetic-field vector for a period from Carrington Rotations (CRs) 2106 2110. A set whole-Sun electric-field are obtained each CR transition interval about 27.3 days. Using inverted as driving variable, MHD with angular resolution π /64, can trace evolution three-dimensional matches specified time-dependent simultaneously satisfies divergence-free condition. additional boundary treatments introduced control contribution horizontal components at weak-field regions. The strength limited 20 Gauss sake computational stability in study. With these numerical treatments, nonpotential features, twisted loop structures, their eruptive outward motions obtained. This capable introducing observation simulations, step toward better model framework solar corona hence wind.