A Study on Developments of Three-dimensional Measurement System for Flow-Structure Interactions using Digital Image Processing

디지털 영상처리기술을 이용한 비접촉식 유체-구조 연동운동3차원 측정시스템 개발에 관한 연구

A simultaneous measurement system that can analyze the flaw-structure interactions has been developed This system consists of four CCD cameras, two for capturing instantaneous flaw fields and two for tracking a solid body. The three-dimensional vector fields around a cylinder are measured while the motion of the cylinder forced by the flow field is measured simultaneously with the constructed system The cylinder is pended in the working fluid of a water channel and the surface of the working fluid is forced sinusoidal to make the cylinder bounced Reynolds number for the mean main stream is about l000. The interaction between the flaw fields and the cylinder motion is examined quantitatively.