Optimizing the Shock Wave-to-Vortex Power Ratio at the End of a Waveguide

Shock waves and vortices are two different ways of transferring acoustic energy to a sample in a contactless manner. This study aims at understanding the power ratio between shock waves and vortices as they exit a wave guide. Diverging tube ends increased the ratio, whereas converging ones decreased it. The power ratios were 0.1 to 9.8. Schlieren imaging was used to quantify the power-ratios. Altering the curvature at the end of the waveguide allows optimization of the shock wave-to-vortex power ratio at the end of a waveguide.