Abstract
In order to predict the free surface phenomena in a 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 confirm the effectiveness of this new technique for obtaining temporal and spatial information on surface elevation and inclination as well as three-dimensional liquid velocity distribution. We confirmed that the free surface position and inclination were measured by this technique within 0.1 mm and 0.7° deviation. A data set for free surface and three-dimensional liquid velocity distribution was obtained through this study.
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