MEASUREMENT OF BREAKING WAVES USING PARTICLE IMAGE VELOCITY

Kuang-An Chang, Philip L.F. Liu

Abstract


The water wave breaking problem has been studied for many years. The most popular experimental methods for studying this problem include the flow visualization method and the Laser Doppler Velocimetry (LDV). However, the first method lacks quantitative description and the second method, in general, needs hundreds of measurements to form a flow field. Instantaneous quantitative flow field information is nearly impossible, if these two methods are used. In recent years, the Particle Image Velocimetry (PIV) has been proven to be a powerful tool for two-dimensional instantaneous velocity measurement. Tens to hundreds of velocity measurements using the LDV can be done in only one single measurement using the PIV.

Keywords


breaking waves; particle velocity; velocimetry

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