Blast Wave Interaction with Generic Objects and the Measurement of Blast Wave Reattachment Distances

• Published in: Journal of the Institution of Engineers (India) Series C Vol. 101; no. 5; pp. 747 - 760
• Main Authors: Dey, Santanu, Murugan, Thangadurai, Chatterjee, Dipankar
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 01.10.2020; Springer Nature B.V
• Subjects: Aerospace Technology and Astronautics; CAD; Computational fluid dynamics; Computer aided design; Cylinders; Engineering; Euler-Lagrange equation; Gamma rays; Industrial and Production Engineering; Mechanical Engineering; Original Contribution; Wave interaction; CFD; Blast wave interaction; Shock tube; Vortex ring; Blast wave reattachment
• ISSN: 2250-0545; 2250-0553
• DOI: 10.1007/s40032-020-00596-1

The interaction of blast waves with inanimate and biological structures has remained a subject of interest in order to understand their responses to the blast exposure. In this article, the interaction of blast wave with three generic objects namely sphere, cylinder and cone is studied through numerical simulation. The blast wave is generated in a shock tube by limiting its driver section length. The numerical simulation is carried out by solving the Euler equations using ANSYS-Fluent CFD software. The main focus here is to find the typical object shape for which the blast wave gets regenerated earlier at the rear of the object after reflection and diffraction. It is observed that the reattachment occurs first in case of a sphere, followed by the cone and finally the cylinder.