Fujio Yamamoto
Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
Tomomasa Uemura
Faculty of Engineering, Kansai University, 3-3-35 Yamate, Suita-shi, Osaka, 564 Japan
Manabu Iguchi
Faculty of Engineering, Osaka University, 2-1 Yamada-oka, Suita-shi, Osaka, 565, Japan
The techniques of particle tracking velocimetry (PTV), also referred to as particle imaging velocimetry (PIV), have advanced quickly because they have the following merits: (1) instantaneous whole flow field measurement, (2) contact-free measurement, (3) easy extraction and processing of physical information through velocity information. Some reviews on PIV describe the principles and applications of many types of PIV, which are applicable slow flows to supersonic flows.