Head on Collisions of Compressible Vortex Loops on a Solid Wall Effects of Wall Distance Variation

Since the dawn of time, human kind have felt the presence of shock waves in nature through thunders and vulcano eruptions and, unable to understand them, have associated their often destructive might to divinities such as Zeus and Jupiter in the Greek and Roman mythology, the Norse divinity of Thor, and the elusive Thunderbird in the Native North American culture. Through history, albeit unknowingly, humans have been able to generate shock waves via the cracking of a whip or the explosion of fireworks. It was the invention of the atomic bomb that brought back fear and respect towards the might of this natural phenomena [1]. For research purposes, shock waves can be easily generated in a laboratory environment using shock-tubes where a high-to-low pressure discontinuity is initially present.