Shock wave implosion in water with different boundary conditions

Summary form only given. The convergence of shock waves in water with either conical or parabolic walls boundaries is studied. The shock waves are generated by underwater electrical explosions of planar Cu wire arrays using a high-current generator with stored energy of ~260 J, rise time of ~80 ns and peak current of ~45 kA. The boundaries of walls are symmetric along the z axis which is also the direction of the exploding wires. It is shown that the shock waves converge faster with the parabola shaped walls. Also the pressure and temperature in the vicinity of the line of convergence, calculated by 2D hydrodynamic simulations coupled with equations of state of water and copper, are larger.