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Numerical challenges in gas-kinetic simulations of magnetohydrodynamics

机译:磁水力学气体动力学气体动力学模拟的数值挑战

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This work describes efforts in the development of a gas-kinetic method (GKM) enhanced with resistive and Hall magnetohydrodynamics (MHD) effects. This method, known as MGKM (for MHD-GKM), has previously been validated as a hybrid-type method using finite-difference schemes to incorporate the electromagnetic effects onto an underlying hydrodynamic gas-kinetic scheme. The current state-of-the-art has been improved with a finite-volume scheme for calculation of ideal and Hall MHD physics. In addition, a second-order temporal integration scheme as well as a method of controlling the divergence of the magnetic field have been implemented. A short discussion of the importance of each addition is presented, along with validating numerical results.
机译:这项工作描述了通过电阻和霍尔磁流动动力学(MHD)效应增强了气体动力学方法(GKM)的努力。 这种方法称为MGKM(对于MHD-GKM),先前已经被验证为使用有限差分方案的混合型方法,将电磁效应掺入底层的流体动力学气体动力学方案上。 目前的最先进,具有用于计算理想和Hall MHD物理的有限体积方案。 另外,已经实现了二阶时间积分方案以及控制磁场的发散的方法。 提出了对每个添加的重要性的简短讨论,以及验证数值结果。

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