Speaker
Description
The magneto-hydrodynamic description is adopted in many disciplines, where the dynamics of magnetized fluids is investigated. It plays a vital role in plasma physics, where high-temperature plasma becomes highly electrically conductive. Its modelling is then essential for the applications like inertial and magnetic confinement fusion, laboratory astrophysics and many others. For this purpose, we recently developed the resistive magneto-hydrodynamic extension of the multi-dimensional simulation code PETE2 (Plasma Euler and Transport Equations version 2) [1,2]. The Lagrangian nature of the code means that the computational mesh follows the flow of the matter unlike the traditional codes. Its numerical description is based on the high-order curvilinear finite elements, which provide high precision, computing efficiency, flexibility and robustness. The latest addition is the model of spontaneous magnetic fields, which are generated during the laser--target interaction or at the fronts of cosmic jets and elsewhere. The construction of the code is reviewed and examples of physically relevant simulations are given.
[1] J. Nikl, M. Kuchařík, and S. Weber. High-order curvilinear finite element magneto-hydrodynamics I: A conservative Lagrangian scheme. Journal of Computational Physics, 2021. Submitted.
[2] J. Nikl, M. Kuchařík, M. Holec, and S. Weber. Curvilinear high-order Lagrangian hydrodynamic code for the laser-target interaction. In S. Coda, J. Berndt, G. Lapenta, M. Mantsinen, C. Michaut, and S. Weber, editors, Europhysics Conference Abstracts – 45th EPS Conference on Plasma Physics, volume 42A, page P1.2019. European Physical Society, 2018.
