High-framing rate PIV for vortex ring visualisation
Cole, D.E., and Liow, J-L. (2005) High-framing rate PIV for vortex ring visualisation. Proceedings of the Fourth Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion. Fourth Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion , 7-9 December 2005, McLaren Vale, SA, Australia , pp. 25-28.
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A high framing rate particle image velocimetry (HFR-PIV) study (3000 Hz) was carried out on the vortex ring shed from a water drop impinging on a pool of water to provide velocity and vorticity data. The impact conditions were We=ll and F/=13. The maximum velocity measured in the vortex core was 0.45 m/s. The propagation velocity and vortex diameter were measured to be 0.18 m/s and 2.4 mm respectively. The HFR-PIV also showed the presence of two counter rotating vortices (or vortex ring) travelling parallel to the free surface moments after impact confirming a theoretical prediction by Peck and Sigurdson . Visual observation of this vortex ring travelling along the free surface is difficult as it usually contains insufficient dye to be identified.
|Item Type:||Conference Item (Refereed Research Paper - E1)|
|Keywords:||drop formation; high-framing rate PIV; vortex ring|
|FoR Codes:||09 ENGINEERING > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%|
|Deposited On:||26 Nov 2010 10:55|
|Last Modified:||12 Feb 2011 04:05|
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