(245c) Development of an in-Line Stereoscopic Piv System to 3-Component Velocity Measurements with a Single Camera

In this research, we evaluated the accuracy of measurement for an in-line stereoscopic Particle Image Velocimetry (PIV) system with a single camera. PIV is a technique for the measurement of fluid velocity from a single plane of interest within a flow field. Especially, two-dimensional PIV (2D PIV) is well established. Recent interests in PIV have been directed towards measuring 3-component velocity to study of more complex fluid systems. Several methods have been successfully demonstrated, which include holographic PIV (HPIV), dual-plane PIV and stereoscopic PIV. Conventional stereoscopic PIV systems use two or more cameras, thus a complex adjustment of camera alignments is necessary. We developed a simple stereoscopic PIV system composed of a single camera, mirrors and a half-mirror. This system is applied to an in-line stereogrammetry method, which requires the two cameras to have the same optical axis. In this developed system, however, one camera is replaced with the mirrors, and a double particle image is separated using the half-mirror. This system is more compact than the conventional stereoscopic PIV systems and can be composed at low cost.