Premium
Laser‐induced ignition in solid‐state combustion
Author(s) -
Dimitriou P.,
Hlavacek V.,
Valone Steven M.,
Behrens Robert G.,
Hansen G. P.,
Margrave J. L.
Publication year - 1989
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690350704
Subject(s) - ignition system , laser , combustion , dissipative system , mechanics , materials science , ablation , laser ignition , minimum ignition energy , laser ablation , irradiation , laser power scaling , thermodynamics , optics , chemistry , physics , organic chemistry , engineering , nuclear physics , aerospace engineering
The ignition process of condensed‐phase combustion by a laser is studied experimentally as well as numerically. Numerical simulations are performed in one, two and three spatial dimensions, and are compared with the experimental observations. The effects of energy‐dissipative mechanisms, such as melting and ablation due to laser irradiation and the effects of laser power output fluctuations, are also studied. We find that the ignition process depends mainly on the energy deposited in the system. The time leading up to ignition is longer for higher light fluxes keeping the average laser power constant, since a larger fraction of the energy is reradiated from the heated surface or consumed during the process of material removal.