HYBRID STEREOSCOPIC PARTICLE IMAGE VELOCIMETRY

The technical aspects of a photographic stereo camera for three-dimens ional particle image velocimetry are described herein. The hybrid conc ept of the camera combines advantages of the angular displacement and the translation method. The camera uses two CCD sensors in order to ad just the lens distances and angles to meet the Scheimpflug criterion a nd two coupled rotating mirrors for image shifting. An application to a jet flow with an exit velocity of 33 m/s demonstrates the successful optimization of the recording process.