Recent applications of particle image velocimetry in aerodynamic research

In vitro blood flow in a rectangular PDMS microchannel: experimental observations using a confocal micro-PIV system

“…The PivView version 2.3 (PivTec, Germany) software (Willert et al 1996, Rafael et al 1998) was used to process the images by an iterative cross-correlation method (Willert et al 1996, Rafael et al 1998, while an advanced correlation technique (multi-grid interrogation) was used to improve the accuracy of the particle image displacement. The cross-correlation evaluation with grid refinement has been previously described (Willert et al 1996, Rafael et al 1998.…”

“…The cross-correlation evaluation with grid refinement has been previously described (Willert et al 1996, Rafael et al 1998. In brief, the cross-correlation method is a statistical analysis that determines the average displacement by comparing the positions of the tracer particles within an interrogation area in two consecutive images.…”

Automotive Testing in the German-Dutch Wind Tunnels

“…The technique and application for a wind tunnel environment became to growth in the last decade of the 20 th century. Various authors gave a general description of the principles and possible application at aerodynamic research in wind tunnels, like Willert and Gharib (1991), Adrian (1991), Hinsch (1993), Willert et al (1996), Willert (1997), Kähler et al (1998), Raffel et al (1998), Ronneberger et al (1998) and Kompenhans et al (1999). Figure 16 shows a setup as applied for a wind turbine.…”

The application of laser measurement techniques to aerospace flows

“…Alternatively the error can be eliminated by the use of stereoscopic PIV [25]. In work involving the DLR and DNW [111,112], PIV wake measurements have been taken from helicopter rotors and wings in large-scale facilities with working sections areas as large as 9.5 m 6 9.5 m. Owing to the size of the facilities, special techniques were developed for the PIV measurements by the DLR group such as large-scale atomizers, light sheet optics and specialized camera mounts. In work by Yeung and Lee [113], twodimensional DPIV measurements of a wing tip vortex from a NACA 0015 pro®le were also taken from a largescale facility (9 m 6 9 m working section area).…”