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Proceedings Paper

Pulsed laser imaging in practical combustion systems from 2D to 4D
Author(s): James B. Kelman; Glen Sherwood; Frank O'Young; Martin Berckmueller; Mark C. Jermy; Assaad R. Masri; Douglas A. Greenhalgh
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Paper Abstract

Laser imaging technologies are now being used in practical combustors, from fuel vapour concentration measurements to liquid drop sizing. Simple 2D imagine has demonstrated its capabilities but has limitations in proving all the required data. Multi-dimension and multi-scalar imaging are demonstrating their power in providing additional information. This paper presents the progression of imaging from 2D to 4D and the advantages gained from the labour intensive multi-imaging processes. Temperature and fuel distribution are of critical interest in most practical combustors. Techniques ranging from simple Planar Laser Induced Fluorescence (PLIF) to more complex multi-scalar techniques such as Laser Sheet Drop-sizing (LSD) and mixture fraction imaging are presented with their potential diagnostic power. Although 2D imaging can provide a great deal of data for axi-symmetric flows, most combustors require characterisation with multiple 2D layers to assemble a fu ll 3D picture of the processes involved. Data is presented for a turbine combustor, showing the development of fuel mixing in the premix duct. The advantages of the complex 4D imaging are shown by the success of fuel imaging in an internal combustion engine where crank-angle resolved images enable the fuel distribution in the combustion cycle and cycle to cycle fluctuations to be quantified.

Paper Details

Date Published: 31 August 2000
PDF: 11 pages
Proc. SPIE 4076, Optical Diagnostics for Industrial Applications, (31 August 2000); doi: 10.1117/12.397963
Show Author Affiliations
James B. Kelman, Cranfield Univ. (United Kingdom)
Glen Sherwood, Cranfield Univ. (United Kingdom)
Frank O'Young, Cranfield Univ. (Taiwan)
Martin Berckmueller, Cranfield Univ. (United Kingdom)
Mark C. Jermy, Cranfield Univ. (United Kingdom)
Assaad R. Masri, Univ. of Sydney (Australia)
Douglas A. Greenhalgh, Cranfield Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 4076:
Optical Diagnostics for Industrial Applications
Neil A. Halliwell, Editor(s)

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