This paper investigates the use of high-power light emitting diode (LED) illumination in Particle Image Velocimetry (PIV) as an alternative to traditional laser-based illumination. The solid-state LED devices can provide averaged radiant power in excess of 10W and by operating them with short current pulses, considerably higher than in continuos operation, light pulses of sufficient energy suitable for imaging micron-sized particles can be generated. The feasibility of this LED-based illumination for tomographic PIV is demonstrated in this paper by measuring grid-generated turbulence and a cylinder wake flow. Also, the use of LED illumination in time-resolved measurements is discussed.
|Title of host publication||17th Australasian Fluid Mechanics Conference 2010|
|Number of pages||4|
|Publication status||Published - 2010|
|Event||Australasian Fluid Mechanics Conference 2010 - Auckland New Zealand, Auckland, New Zealand|
Duration: 5 Dec 2010 → 9 Dec 2010
Conference number: 17th
|Conference||Australasian Fluid Mechanics Conference 2010|
|Abbreviated title||AFMC 2010|
|Period||5/12/10 → 9/12/10|
|Other||The Australasian Fluid Mechanics Conference has grown steadily from its beginning at the University of Western Australia in 1962. The conference series has traditionally covered the broad field of fluid mechanics in all engineering and scientific disciplines. It provides a forum for presentation of papers in all aspects of fundamental and applied fluid mechanics.|
Proceedings of the 17th Australasian Fluid Mechanics Conference 5-9th December 2010 was edited by Prof. G.D. Mallinson and Dr J.E. Cater and published by the Faculty of Engineering in association with the Centre for Continuing Education The University of Auckland.