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We are currently seeking a Research Fellow in analytical and numerical modelling of multiphase flows and sprays
Laser Induced Incandescence (LII)
Contact: Dr Cyril Crua
Theory
LII of a diesel spray
Laser-Induced Incandescence (LII) takes place when a high power laser beam hits particulate matter
like soot. As the particles gain energy from the beam, their temperature increases and if the energy absorption rate
is high enough, the soot particles will reach incandescent temperatures (4000 K) and produce near-blackbody emission.
The radiation emitted is nearly proportional to soot volume fractions (Melton, 1984). As
instantaneous planar measurements can be easily obtained, LII has emerged as an attractive and versatile technique
for the measurement of soot concentrations in unsteady flows of complex geometry. For soot concentration measurements,
LII has at least two significant benefits when opposed to other optical techniques, firstly it is more sensitive than sampling
techniques, and secondly, its broadband radiation widens the range of collection strategies available to the experimenter.
Selected Publications:
- C. Crua, D.A. Kennaird, M.R. Heikal (2003) Combustion and Flame, 135(4), 475-488.
- C. Crua, J.C. Evans, D.A. Kennaird, M.R. Heikal (2003) 9th International Conference on Liquid Atomization and Spray Systems (ICLASS), Sorrento, Italy, 13-17 July 2003.
- C. Crua (2002), PhD Thesis, School of Engineering, University of Brighton, UK.