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Particle Image Velocimetry: Basics, Developments and Techniques

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New tools and techniques such as single-oscillator, double-pulsed lasers expand the applications for particle image velocimetry, particularly in aircraft design.

M. Kelnberger, InnoLas GmbH; G. Schwitzgebel, Universität Mainz

Particle image velocimetry (PIV) is an experimental tool in fluid mechanics and aerodynamics. The basic principle involves photographic recording of the motion of microscopic particles that follow the fluid or gas flow. Image processing methods are then used to determine the particle motion, and hence the flow velocity, from the photographic recordings. Provided there are enough particles within the area of flow under investigation, the entire velocity field of the flow can be determined. The near-instantaneous velocity field is of particular importance. PIV therefore has all the...Read full article

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