caa a22 4500 606197990 CHVBK 20210128100932.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s00348-015-1932-8 doi (NATIONALLICENCE)springer-10.1007/s00348-015-1932-8 Isotropic-planar illumination for PIV experiments [Elektronische Daten] [Michael Atkins, Tongbeum Kim] A new method for laser illumination in particle image velocimetry (PIV) has been introduced: internal "isotropic-planar” illumination that provides laser light to regions of the flow field that were previously cast into shadow using the conventional external (laser light sheet) illumination method. To demonstrate the effectiveness of the isotropic-planar illumination method, a comparison of the measured velocity field around five side-by-side circular cylinders that are immersed in uniform flow is made against the conventional external illumination method. The new method is effective at eliminating the shadow region, allowing the velocity field of the upstream, gap and downstream regions around the five side-by-side circular cylinders to be measured simultaneously. These PIV measurements provide new insight into the behavior of the gap flow that passes between the cylinders. Springer-Verlag Berlin Heidelberg, 2015 Atkins Michael University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, 2000, Johannesburg, South Africa aut Kim Tongbeum University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, 2000, Johannesburg, South Africa aut Experiments in Fluids Springer Berlin Heidelberg 56/3(2015-03-01), 1-10 0723-4864 56:3<1 2015 56 348 https://doi.org/10.1007/s00348-015-1932-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-015-1932-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Atkins Michael University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, 2000, Johannesburg, South Africa aut NATIONALLICENCE 700 1- Kim Tongbeum University of the Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, 2000, Johannesburg, South Africa aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/3(2015-03-01), 1-10 0723-4864 56:3<1 2015 56 348