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Pulsed operation of high power light emitting diodes for flow velocimetry
Willert, Christian and Mößner, Steffen and Klinner, Joachim (2009) Pulsed operation of high power light emitting diodes for flow velocimetry. 8th Internation Symposium on Particle Image Velocimetry (PIV09), 25.-28. Aug. 2009, Melbourne, Australia. (In Press)
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Abstract
High powered light emitting diodes (LED) are investigated for possible uses as light sources in flow diagnostics, in particular, as an alternative to laser-based illumination in particle imaging flow velocimetry. Recent developments in solid state illumination resulted in mass-produced LEDs that provide average radiant power in excess of 10 Watt. By operating these LEDs with short duration, pulsed currents that are considerably beyond their continuous current damage threshold, light pulses can be generated that are sufficient to the illuminate and image micron sized particles in flow velocimetry. Kilohertz frame rate PIV measurements in water are presented. The feasibility of LED-based PIV measurements in air is also demonstrated.
| Document Type: | Conference or Workshop Item (Speech) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Title: | Pulsed operation of high power light emitting diodes for flow velocimetry | ||||||||
| Authors: |
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| Date: | 25 August 2009 | ||||||||
| Refereed publication: | Yes | ||||||||
| In ISI Web of Science: | No | ||||||||
| Status: | In Press | ||||||||
| Keywords: | flow diagnostics, image based velocimetry, time-resolved PIV | ||||||||
| Event Title: | 8th Internation Symposium on Particle Image Velocimetry (PIV09) | ||||||||
| Event Location: | Melbourne, Australia | ||||||||
| Event Type: | Conference | ||||||||
| Event Dates: | 25.-28. Aug. 2009 | ||||||||
| Organizer: | Monash University | ||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||
| HGF - Program: | Aeronautics | ||||||||
| HGF - Program Themes: | L ER - Engine Research | ||||||||
| DLR - Research area: | Aeronautics | ||||||||
| DLR - Program: | L ER - Engine Research | ||||||||
| DLR - Research theme (Project): | L - Virtual Engine and Validation Methods | ||||||||
| Location: | Köln-Porz | ||||||||
| Institutes and Institutions: | Institute of Propulsion Technology Institute of Propulsion Technology > Engine Measurement Systems | ||||||||
| Deposited By: | Dr.phil. Christian Willert | ||||||||
| Deposited On: | 19 Oct 2009 09:33 | ||||||||
| Last Modified: | 15 Jan 2010 01:30 |
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