Abstract
A fluid motion at permeable layer constructed model of precast concrete armor unit was visualized in ossillatory flow. Many turbulence measurements have been ever done by point measurement techniques such as LDA. In this study, a method of measurement has been conducted by a particle tracking velocimetry for 2-D space. It has been composed of Kalman's filtering theory, the Chai-Square-test and initial evaluation of velocities of particles which newly appear in the flame. Images of 30μm diameter particles were taken using a ultra high-speed video camera and Argon-ion laser slit illumination.
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