Numerical Study of Divergence Cleaning and Coronal Heating/Acceleration Methods in the 3D COIN-TVD MHD Model

In the solar coronal numerical simulation, heating/acceleration and magnetic divergence cleaning techniques are very important. The coronal–interplanetary total variation diminishing (COIN-TVD) magnetohydrodynamic (MHD) model is developed in recent years that can effectively realize three-dimensional (3D) wind simulation. this study, we focus on 3D simulation by using COIN-TVD MHD model. order to simulate heating acceleration of region, volume term improved efficiently. Then, influence different methods reduce ∇⋅B constraint error structure discussed. Here, choose Carrington Rotation (CR) 2199 as a study case try make comparison results among methods, including diffusive method, Powell composite diffusive/Powell Our show with id="m2">∇⋅<mml:mi be reduced levels during Among three used, method maintain better certain extent, relative field controlled 10 −9 . Although these simulations performed for background corona, also suitable CME initiation propagation.