Shock wave convergence in water with parabolic wall boundaries

Abstract

The convergence of shock waves in water, where the cross section of the boundaries between which the shock wave propagates is either straight or parabolic, was studied. The shock wave was generated by underwater electrical explosions of planar Cu wire arrays using a high-current generator with a peak output current of $45 kA and rise time of $80 ns. The boundaries of the walls between which the shock wave propagates were symmetric along the z axis, which is defined by the direction of the exploding wires. It was shown that with walls having a parabolic cross section, the shock waves converge faster and the pressure in the vicinity of the line of convergence, calculated by two-dimensional hydrodynamic simulations coupled with the equations of state of water and copper, is also larger. V C 2015 AIP Publishing LLC. [http://dx.

Analysis of the Flow Pattern and Flow Rectification Measures of the Side-Intake Forebay in a Multi-Unit Pumping Station

“…While in this study, the concept of using parabolic wall boundaries was concluded from the contribution that they reduce the stress over the parabolic wall. A contribution also discussed that parabolic ships' hulls eliminate the turbulence of the water flow [17,24]. At the same time, a study of submerged parabolic obstacles showed a decrease in vortex sizes [23].…”