model, based upon the Lindemann melting law, will be used later. We have performed 2D lagrangian MHD simulations for HEL and quasi-spherical liner systems in a Z-pinch configuration. For the HEL system, we have obtained II.COMPUTATIONAL DETAILS reasonable agreement with the experimental values of liner velocity, kinetic energy and the liner shape.We have performed computer simulations for two In quasi-spherical liner system simulation, there is a experimental systems, details of which are available in the good match with published results for the liner shape and literature. These are the High Energy Liner (HEL) [3] and radius until t = 12.7 gs. Also, our simulation indicates the quasi-spherical liner acceleration [4] experiments. melting, but no vaporization, as reported in the literature. Details are given in the following sub-sections.However, as convergence proceeds toward the axis, we find large distortions in the inner surface of the liner, A. High Energy Liner (HEL) system which do not allow the simulation to continue beyondThe HEL system [3] consists of a thin cylindrical shell 14.4 gs. This is a major mismatch with 2D MHD made of aluminum, having a thickness of 4 mm. It has an simulations reported in the literature.initial outer radius of 240 mm and a length of 100 mm.
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