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Alternative TitleThree-dimensional Steady State Interplanetary Solar Wind Simulation in Spherical Coordinates with a Six-component Grid
张嫚; 周玉芬
Source Publication空间科学学报
KeywordMhd方程组 六片网格系统 行星际太阳风模拟
Other AbstractIn this paper, the MacCormack scheme is applied to the time-independent Magneto-hydrodynamics (MHD) equations in spherical coordinates with a six-component grid for the three-dimensional interplanetary solar wind simulation. The use of six-component grid system can better body-fit the spherical shell domain of interplanetary space as well as avoid the singularity and the mesh convergence near the poles. The radial coordinate is treated as a time-like coordinate, thus can significantly reduce the computational time. The inner boundary distribution is determined by the empirical relations and observation. Five kinds of inner boundary conditions used formerly by MHD modelers are comparatively used to simulate the Carrington Rotation (CR) 1922 solar wind background. The numerical results show that all these boundary conditions can produce consistent large-scale solar wind structure with the observation, and better result in agreement with observations can be achieved when adopting the following inner boundary condition: the radial speed is obtained by the empirical relationship proposed by McGregor et al. in 2011,the magnetic field is obtained by Horizontal Current Current Sheet (HCCS) model, an assumption of constant momentum flux is used to derive number density, and temperature is chosen to assure that the total pressure is uniform at the inner boundary.
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
张嫚,周玉芬. 球坐标系六片网格下三维定态行星际太阳风模拟[J]. 空间科学学报,2014,34(6):773-784.
APA 张嫚,&周玉芬.(2014).球坐标系六片网格下三维定态行星际太阳风模拟.空间科学学报,34(6),773-784.
MLA 张嫚,et al."球坐标系六片网格下三维定态行星际太阳风模拟".空间科学学报 34.6(2014):773-784.
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