Simulation and Experiment Study for the Underwater Focusing Shockwave

If two electrodes are stressed with a high voltage which creates a sufficiently strong electric field between the electrodes, the underwater pulsed discharge will happen. Then a strong shockwave is eradiated from the electrodes. Through focusing, the direction and the sound level can be enhanced obviously. In order to obtain the propagation rule of the focusing shockwave, the finite element model is established by ANSYS and some simulations were made. Furthermore, with a testbed, some experiments have been done, and the shock wave is detected with a PCB pressure sensor. The sound pressure level in different position of the sound axis of the underwater focusing shockwave sound field has been measured. And the maximum pressure propagation rule of the underwater focusing shockwave is obtained. Comparing the simulation result and the experiment result, a good matching between them is found. So, the method basing on the ANSYS modeling is reliability and effectiveness in the studying of underwater focusing shockwave sound field.