Volume 40 Issue 3
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Article Navigation >  Chinese Journal of Space Science  > 2020  >  40(3): 305-314
YANG Yi, SHEN Fang, YANG Zicai. Simulation of Interplanetary Solar Wind with Three-dimensional MHD Model Driven by Multiple Observations[J]. Chinese Journal of Space Science, 2020, 40(3): 305-314. doi: 10.11728/cjss2020.03.305
Citation: YANG Yi, SHEN Fang, YANG Zicai. Simulation of Interplanetary Solar Wind with Three-dimensional MHD Model Driven by Multiple Observations[J]. Chinese Journal of Space Science, 2020, 40(3): 305-314. doi: 10.11728/cjss2020.03.305
shu

Simulation of Interplanetary Solar Wind with Three-dimensional MHD Model Driven by Multiple Observations

doi: 10.11728/cjss2020.03.305 cstr: 32142.14.cjss2020.03.305

  • 1. National Space Science Center, Chinese Academy of Sciences, Beijing 100190;

  • 2. University of Chinese Academy of Sciences, Beijing 100049;

  • 3. Institute of Space Science and Applied Technology, Harbin Institute of Technology, Shenzhen 518055

  • Received Date: 2019-02-14
  • Rev Recd Date: 2019-07-25
  • Publish Date: 2020-05-15
    Abstract
  • Three-dimensional Magnetohydrodynamics (MHD) modeling is a key method for studying the interplanetary solar wind. This paper develops a new solar wind MHD model driven by multiple observations. The computation region of this model is from 0.1 Astronomical Unit (AU) to 1 AU. The model solves the ideal MHD equations in a six-component grid system by using the Total Variation Diminution (TVD) Lax-Friedrich scheme. In the new model, the physical parameters at the inner boundary are determined as following:the magnetic field is derived using the magnetogram synoptic map from GONG; the electron density is derived from the Polarized Brightness (PB) observations from LASCO; the velocity is deduced using an Artificial Neural Network (ANN) tactic with both the magnetogram and PB observations, and the temperature is derived from the magnetic field and electron density by a self-consistent method. We use this model to simulate the interplanetary solar wind during CR2062. The results show various observational characteristics, and are in good agreement with the OMNI and Ulysses observations. Thus, this model can be used to provide more realistic interplanetary solar wind and will be helpful for the research on space weather prediction.

     

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