320 / 2019-02-25 15:38:48

Developments of Simulation Codes for Magnetic Driven Experiments in IFP

MHD,pulse power,Z Pinch,magnetically driven

全体主题 > Interface Instabilities at Extremes

Numerical simulation of electromagnetic driving experiments is the main research area of Computational Physics Group of IFP, CAEP. We mainly focus on the MHD modeling of material dynamics driven by high pulse current, development of computational tools, and analysis of simulation results, aiming at improving our recognition ability of related physical process and satisfying demands in pulsed-power facility research, engineering design and physical applications.
For years, our group has developed several MHD codes, which have been widely used in various numerical studies of electromagnetic driving experiments, such as Z-pinch, cylindrical magnetic flux comression, magnetic-driving isoentropy compression and high-velocity flyers, electromagnetic railgun, and etc. Based on the ALE framework, MDSC code is a two-dimensional, three-temperature, multi-domain, multi-material MHD code. It adopts structural mesh grid and finite-volume method, and has the ability to deal with processes such as heating, melting, evaporation, and formation of high-temperature, high-density plasmas. At present, the Lagrange part of the code has been completed, and it has been applied in analysis of solid liner implosion and magnetic-driving flyer experiments. FOI-PERFECT is a three-dimensional, full electromagnetic relaxation MHD code. Based on Eulerian framework, it adopts Cartesian and cylindrical coordinates and structural mesh grid. Space discretization method is R-TVD/WENO-IFS, and time discretization method is ASI-SSP. The code is highly effective with high accuracy, robust, and highly paralleled, and is suitable for plasma simulation in astrophysics, space as well as electromagnetic driving. TriAngels-MHD is a two-dimensional MHD code, based on triangle non-structural mesh under SGH Lagrange framework. It adopts dynamic local remeshing method to deal with mesh distortion, and adopts a matter-flow method to deal with “checkboard” oscillation. It has the ability to deal with variable-vacuums, multi-material and large deformation cases, and has played an important role in cylindrical magnetic flux compression studies.
In this paper, some of new developments and applications are introduced.