Abstract
In this study, a new particle image velocimetry (PIV) technique was developed. In this method, two high speed cameras were used. A viewing field of these cameras corresponded by using both a calibration target and micro motion positioning stages. In traditional dynamic PIV, a time interval of two images depends on the camera frame rate. A time interval of two images affects the measurement accuracy significantly. Therefore, it is important to control a time interval of two images. This developed technique provides an arbitrary interval of two images by delaying capture timing of one camera. Capture timing was controlled by function generator. Eventually, we measured surrounding liquid motion in the vicinity of the bubble to examine availability of this method.
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