Date of Award
Doctor of Philosophy in Mechanical Engineering and Applied Mechanics
Mechanical, Industrial and Systems Engineering
Implosion is the sudden inward collapse of a submerged structure caused by hydrostatic loading. Confined implosion is characterized by a surrounding structure that significantly effects the flow of fluid around the collapsing volume. The goal of this work is to further understand the physics of collapsing volumes in confined environments. To do so, multiple studies are conducted, each exploring a portion of the parameter space. The first chapter of this work utilizes a unique facility to perform a comprehensive experimental study investigating the implosion of thin, aluminum cylinders with the addition of flow restriction. These experiments take place inside a large pressure vessel and utilize high speed photography, dynamic pressure sensors, and Digital Image Correlation. The results of this work show that by changing the size of the open end, referred to as the flow area ratio, there can be a significant effect on the structural deformations and implosion severity. The other chapters explore parameters including flow restriction, failure mode, and air bubble parameters. In these chapters, additional information is in gained in developing an understanding how these parameters effect the resulting pressure pulses and fluid motion.
Tilton, Craig, "Fluid-Structure Interaction of Collapsing Volumes in Confined Environments" (2023). Open Access Dissertations. Paper 1538.