High-framing rate PIV for vortex ring visualisation
Cole, D.E., and Liow, J-L. (2005) High-framing rate PIV for vortex ring visualisation. In: Proceedings of the Fourth Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion. pp. 25-28. From: Fourth Australian Conference on Laser Diagnostics in Fluid Mechanics and Combustion, 7-9 December 2005, McLaren Vale, SA, Australia.
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Abstract
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 [11]. Visual observation of this vortex ring travelling along the free surface is difficult as it usually contains insufficient dye to be identified.
Item ID: | 14817 |
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Item Type: | Conference Item (Research - E1) |
ISBN: | 978-0-9757855-2-2 |
Keywords: | drop formation; high-framing rate PIV; vortex ring |
Date Deposited: | 26 Nov 2010 00:55 |
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% |
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