WebbAs described in the previous chapter, Particle Image Velocimetry (PIV) uses images of seeded marker particles in a fluid flow to measure two-dimensional or three-dimensional … WebbBy knowing the extent of image shifting used in a multiple-exposure and by a priori knowledge of the mean flow-field, the cross-correlation of different sized interrogation …

Multi-Cross-Correlation Method in Particle Image Velocimetry

http://www.sciepub.com/reference/61311 WebbThe operating principle of PIV stems from the following simple relation: . That is, average velocity, , is equal to the displacement, , divided by the change in time, . In practice, the exploitation of this equation starts with the seeding of a flow with particles capable of scattering laser light. philips electric flosser

On improvement of PIV image interrogation near stationary interfaces

Webb30 juni 1992 · Theory of cross-correlation analysis of PIV images To improve the performance of particle image velocimetry in measuring instantaneous velocity fields, direct cross-correlation of image fields can be used in place of auto-correlation methods of interrogation of double- or multiple-exposure recordings. WebbBy knowing the extent of image shifting used in a multiple-exposure and by a priori knowledge of the mean flow-field, the cross-correlation of different sized interrogation spots with known separation can be optimized in terms of spatial resolution, detection … WebbBy knowing the extent of image shifting used in a multiple-exposure and by a priori knowledge of the mean flow-field, the cross-correlation of different sized interrogation … philips elearning portal