Simultaneous measurement system on free surface and liquid velocity distribution using particle image velocimeter and laser focus displacement meter

摘要

In order to predict the free surface phenomena in pool, the interaction between the liquid flow field and free surface should be evaluated. In this study, we aimed at developing a new three-dimensional measurement system for surface elevation and liquid velocity profiles in pool water using an image processing technique and a laser focus displacement meter. The purpose of the experiments was to cvonfirm the effectiveness of this new technique obtyaining temporal and spatial information of surface elevation and inclination as well as particle positions. As a result, it was confirmed that the free surface position and inclination were measured by this technique within 0.1 mm and 0.7 deg deviation.