Multi-fluid and Hybrid Models of Waves in Coronal Structures

快速太阳风和飘带的建模将基于一对交错的计算机代码进行。一种是包含电子、质子和一种重离子的三维三流体密码。另一种是动力学混合密码，其中质子和重离子被视为粒子，电子被视为流体。混合代码将用于研究高频动能阿尔芬波对分布函数的影响，特别是确定这些波的阻尼及其对等离子体的加热。这些结果将被纳入流体模拟，并与观测结果进行比较，如离子流动速度和有效温度，来自SOHO和TRACE上的仪器。

Modeling of the fast solar wind and streamers will be carried out based on a pair of interlaced computer codes. One will be a 3D three-fluid code encompassing electrons, protons and one species of heavy ion. The other is a kinetic hybrid code where the protons and heavy ions are treated as particles and the electrons as a fluid. The hybrid code will be used to study the effect of high-frequency kinetic Alfven waves on the distribution functions, and in particular to determine the damping of these waves and their heating of the plasma. The results will be incorporated in the fluid simulation, and the results compared with observations, like ion flow speeds and effective temperature, derived from instruments on board SOHO and TRACE.