Magnetohydrodynamic Modeling of the Solar Corona with an Effective Implicit Strategy
نویسندگان
چکیده
Abstract In this paper, we design an effective and robust model to solve the 3D single-fluid solar wind plasma magnetohydrodynamics (MHD) problem of low β . This MHD is formulated on a six-component composite grid system free polar singularities. The computational domain ranges from surface super-Alfvénic region. As common all codes, code must handle physical positivity-preserving property, time-step enlargement, magnetic field divergence-free maintenance. To maintain positivity, employ Harten–Lax–van Leer Riemann solver take self-adjusting method for variable reconstruction. loosen limitation, resort implicit lower–upper symmetric Gauss–Seidel keep sparse Jacobian matrix diagonally dominant improve convergence rate. deal with constant theme that divergence-free, adopt globally solenoidality-preserving approach. After establishing model, use its explicit versions numerically investigate steady-state in Carrington rotations (CRs) 2172 2210. Both simulations achieve almost same results two CRs are basically consistent coronal observations mapped situ interplanetary measurements. Furthermore, conduct ad hoc simulation by multiplying initial CR factor 6. shows can robustly efficiently as about 5 × 10 −7 Therefore, established very promising simulating complex strong environments.
منابع مشابه
an investigation of the types of text reduction in subtitling: a case study of the persian film gilaneh with english subtitles
چکیده ندارد.
15 صفحه اولMagnetohydrodynamic Modeling of Solar Magnetic Arcades Using Exponential Propagation Methods
Advanced numerical methods based on exponential propagation have been applied to mag netohydrodynamic MHD simulations This recently developed numerical technique e volves the system of nonlinear equations using exponential propagation of the Jacobian matrix The exponential of the matrix is approximated by projecting it onto the Krylov subspace using the Arnoldi algorithm The primary advantage o...
متن کاملdevelopment and implementation of an optimized control strategy for induction machine in an electric vehicle
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
15 صفحه اولAn Alternating Direction Implicit Method for Modeling of Fluid Flow
This research includes of the numerical modeling of fluids in two-dimensional cavity. The cavity flow is an important theoretical problem. In this research, modeling was carried out based on an alternating direction implicit via Vorticity-Stream function formulation. It evaluates different Reynolds numbers and grid sizes. Therefore, for the flow field analysis and prove of the ability of the sc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astrophysical Journal Supplement Series
سال: 2021
ISSN: ['1538-4365', '0067-0049']
DOI: https://doi.org/10.3847/1538-4365/ac1f8b