GEM Postdoc: Cross-scale Coupling in Collisionless Magnetic Reconnection: Two Fluid Simulations

这个项目将开发一个新的代码来模拟磁重联。代码将把电子和离子视为分离但耦合的流体。第一步将是开发电场和磁场方程的求解器。下一步是开发一个模块来解决控制电子流体的方程。本模块将具有开启或关闭电子方程中不同项的能力，以研究不同项的影响。一旦电子流体代码完全开发出来，离子流体模块就可以很快地从电子流体中推导出来。最后一步是将电子和离子流体与电场和磁场求解器耦合起来。通过将电子和离子视为独立的流体，新代码将能够研究无碰撞磁重联中的跨尺度耦合。无碰撞重联是将太阳风中的能量耦合到地球磁层并最终进入电离层和中性大气的最重要的过程。无碰撞重联在磁暴和磁暴的产生中也是一个至关重要的过程。

This project will develope a new code for the simulation of magnetic reconnection. The code will treat the electrons and ions as separate but coupled fluids. The first step will be the development of a solver for the equations of the electric field and magnetic field. The next step is to develop a module that solves for the equations governing the electron fluid. This module will have the capability of switching on or off different terms in the electron equations in order to study the effects of the different terms. Once the electron fluid code has been fully developed the ion fluid modlue can be quickly derived from the electron fluid. The final step will be to couple the electron and ion fluids and the electric and magnetic field solvers. By treating the electrons and ions as separate fluids the new code will have the ability to investigate cross-scale coupling in collisionless magnetic reconnection. Collisionless reconnection is the most important process that couples the energy in the solar wind into Earth's magnetosphere and eventually down to the ionosphere and neutral atmosphere. Collisionless reconnection is also a critically important process in the generation of magnetic substorms and storms.