PIV measurement of flow for fluid-structure interaction

Abstract

Fluid-structure interaction, which can be easily found in nature, can be categorized into two main parts as follows

flow inside a confined geometry and flow around a moving body. In this dissertation, Particle image velocimetry, which is the most representative optical flow visualization method, was used to measure those two categories in two- and three-dimensions. For the flow inside a confined geometry, two-dimensional measurement of moderator circulation flow of pressurized heavy water reactor (CANDU) and three-dimensional measurement of flow inside a human nasal cavity model are performed. For the flow around a moving body, two-dimensional measurement of schooling behavior of flapping airfoils and three-dimensional measurement of flow around an arbitrarily moving object are performed. Image processing techniques are proposed for flow measurements of various fluid-structure interaction, and the measurement results are analyzed.