Shock wave focusing in water inside convergent structures

摘要: Experiments on shock focusing in water-filled convergent structures have been performed. A wave water is generated by means of a projectile, launched from gas gun, which impacts structure. Two types tested; bulk material and thin shell The geometric shape the given logarithmic spiral, this particular chosen because it maximizes amount energy reaching focal region. High-speed schlieren photography used to visualize dynamics during event. Results show that fluid-structure interaction between structure different structure; multiple reflections inside are reflected back into water, thus creating train, not observed for material.