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PIV (Particle Image Velocimetry) technology is a transient, multi-point and non-contact speed measuring method of fluid dynamics, playing more and more important role in experimental fluid mechanics. The measurement of supersonic complex flow field has high requirements for PIV experimental configurations. In most of the PIV measurement systems, instant velocity field can be processed by getting only two consecutive images, which has very large restriction for the research of supersonic unsteady flow field. So we build up a PIV platform for measuring continuous flow field with high spatio-temporal resolution, several photos with ainterval of 100 ns could be obtained in this system, which greatly expand the application of PIV technology in supersonic unsteady flow field.

A Novel Rapid and Multi-frame PIV Method for Measuring Supersonic Flow