TWO-DIMENSIONALMHD SIMULATIONOFQUASI-SPHERICAL AND CYLINDRICALMETALLICLINERACCELERATION

model, basedupontheLindemann melting law,willbe usedlater. We haveperformed 2D lagrangian MHD simulations forHEL andquasi-spherical liner systems inaZ-pinch configuration. FortheHEL system, wehaveobtained II.COMPUTATIONAL DETAILS reasonable agreement withtheexperimental values of liner velocity, kinetic energy andtheliner shape. We haveperformed computer simulations fortwo Inquasi-spherical liner systemsimulation, there isa experimental systems, details ofwhichareavailable inthe goodmatchwithpublished results fortheliner shape and literature. These aretheHighEnergy Liner (HEL)[3]and radius until t= 12.7gs.Also, oursimulation indicates thequasi-spherical liner acceleration [4]experiments. melting, butnovaporization, asreported intheliterature. Details aregiven inthefollowing sub-sections. However, asconvergence proceeds toward theaxis, we findlarge distortions intheinner surface oftheliner,A.HighEnergy Liner(HEL)system whichdonotallowthesimulation tocontinue beyond TheHEL system [3]consists ofathincylindrical shell 14.4gs.Thisisa majormismatch with2D MHD madeofaluminum, having athickness of4mm.Ithasan simulations reported intheliterature. initial outer radius of240mm andalength of100mm. Fig.1 showsa schematic of thesystem.Other experimental details ofthesystem canbeobtained from