Measurement methods fusion and application for fluid-structure coupling analysis using PSP/TSP and event-based-imaging-techniques

Abstract

Flow-structure coupling is the study of fluid flow causing deformation of a surface or structure. Several measurement techniques exist to extract position and deformation information of the surface. A combination of deformation measurement and PIV has been applied with success in recent years. In this work the combination of temperature and pressure measurement with TSP/PSP and simultaneous measurement of the position/deformation using event-based camera-imaging (EVB), STB or IPCT and/or PROPAC is evaluated. A combination of EVB and high-speed camera set-ups for high-speed measurements up to 10 kHz is implemented, and the cross-talk between the system and resulting error is investigated. Timing and synchronization of PSP/TSP-System and deformation is optimized. For the deformation measurement with the EVB cameras, a laser based random dot pattern is generated using DOE optics. Calculation of deformation with preceding triangulation of the model using location fixed and pattern fixed markers using one of the deformation detection methods (STB, PROPAC or IPCT) is carried out. Combinations of the mentioned measurement techniques are upcoming challenges and are more and more interesting to understand the flow physics and correlation to the deformations/positions. The investigated measurement techniques are applied on a flexible wind tunnel model.