# A NEW THREE-DIMENSIONAL SOLAR WIND MODEL IN SPHERICAL COORDINATES WITH A SIX-COMPONENT GRID

## Abstract

In this paper, we introduce a new three-dimensional magnetohydrodynamics numerical model to simulate the steady state ambient solar wind from the solar surface to 215 R {sub s} or beyond, and the model adopts a splitting finite-volume scheme based on a six-component grid system in spherical coordinates. By splitting the magnetohydrodynamics equations into a fluid part and a magnetic part, a finite volume method can be used for the fluid part and a constrained-transport method able to maintain the divergence-free constraint on the magnetic field can be used for the magnetic induction part. This new second-order model in space and time is validated when modeling the large-scale structure of the solar wind. The numerical results for Carrington rotation 2064 show its ability to produce structured solar wind in agreement with observations.

- Authors:

- SIGMA Weather Group, State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 (China)

- Publication Date:

- OSTI Identifier:
- 22340172

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Astrophysical Journal, Supplement Series; Journal Volume: 214; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPUTERIZED SIMULATION; CURVILINEAR COORDINATES; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; ROTATION; SOLAR WIND; SPHERICAL CONFIGURATION; STEADY-STATE CONDITIONS; THREE-DIMENSIONAL CALCULATIONS

### Citation Formats

```
Feng, Xueshang, Zhang, Man, and Zhou, Yufen, E-mail: fengx@spaceweather.ac.cn.
```*A NEW THREE-DIMENSIONAL SOLAR WIND MODEL IN SPHERICAL COORDINATES WITH A SIX-COMPONENT GRID*. United States: N. p., 2014.
Web. doi:10.1088/0067-0049/214/1/6.

```
Feng, Xueshang, Zhang, Man, & Zhou, Yufen, E-mail: fengx@spaceweather.ac.cn.
```*A NEW THREE-DIMENSIONAL SOLAR WIND MODEL IN SPHERICAL COORDINATES WITH A SIX-COMPONENT GRID*. United States. doi:10.1088/0067-0049/214/1/6.

```
Feng, Xueshang, Zhang, Man, and Zhou, Yufen, E-mail: fengx@spaceweather.ac.cn. Mon .
"A NEW THREE-DIMENSIONAL SOLAR WIND MODEL IN SPHERICAL COORDINATES WITH A SIX-COMPONENT GRID". United States.
doi:10.1088/0067-0049/214/1/6.
```

```
@article{osti_22340172,
```

title = {A NEW THREE-DIMENSIONAL SOLAR WIND MODEL IN SPHERICAL COORDINATES WITH A SIX-COMPONENT GRID},

author = {Feng, Xueshang and Zhang, Man and Zhou, Yufen, E-mail: fengx@spaceweather.ac.cn},

abstractNote = {In this paper, we introduce a new three-dimensional magnetohydrodynamics numerical model to simulate the steady state ambient solar wind from the solar surface to 215 R {sub s} or beyond, and the model adopts a splitting finite-volume scheme based on a six-component grid system in spherical coordinates. By splitting the magnetohydrodynamics equations into a fluid part and a magnetic part, a finite volume method can be used for the fluid part and a constrained-transport method able to maintain the divergence-free constraint on the magnetic field can be used for the magnetic induction part. This new second-order model in space and time is validated when modeling the large-scale structure of the solar wind. The numerical results for Carrington rotation 2064 show its ability to produce structured solar wind in agreement with observations.},

doi = {10.1088/0067-0049/214/1/6},

journal = {Astrophysical Journal, Supplement Series},

number = 1,

volume = 214,

place = {United States},

year = {Mon Sep 01 00:00:00 EDT 2014},

month = {Mon Sep 01 00:00:00 EDT 2014}

}