Ignition delay time measurements for mixtures of pure n-butanal/n-pentanal(1%)–O2/Ar were carried out in a low pressure shock tube at equivalence ratios of 0.5, 1.0 and 2.0, at reflected shock pressures of 1 and 3 atm and at reflected shock temperatures of 1100-1850 K. Additional experiments were carried out in a single pulse shock tube to determine the speciation profiles of the fuel and intermediates species under pyrolysis conditions for mixtures of pure butanal/pentanal (3%) –Ar (97%) at reflected pressure of 1.9 atm and reflected temperatures of 1096—1368 K. Two kinetic mechanisms have been developed for both aldehydes following two different approaches: a detailed approach and a lumped approach. Both the mechanisms, developed to describe the high temperature oxidation and to explore the important reaction classes which control the auto-ignition behaviour of n-butanal, are found to be well in agreement with the experimental data.

Experimental and kinetic modelling study of n-butanal auto-ignition in a shock tube

PELUCCHI, MATTEO;SAGGESE, CHIARA;FRASSOLDATI, ALESSIO;RANZI, ELISEO MARIA;FARAVELLI, TIZIANO;
2013-01-01

Abstract

Ignition delay time measurements for mixtures of pure n-butanal/n-pentanal(1%)–O2/Ar were carried out in a low pressure shock tube at equivalence ratios of 0.5, 1.0 and 2.0, at reflected shock pressures of 1 and 3 atm and at reflected shock temperatures of 1100-1850 K. Additional experiments were carried out in a single pulse shock tube to determine the speciation profiles of the fuel and intermediates species under pyrolysis conditions for mixtures of pure butanal/pentanal (3%) –Ar (97%) at reflected pressure of 1.9 atm and reflected temperatures of 1096—1368 K. Two kinetic mechanisms have been developed for both aldehydes following two different approaches: a detailed approach and a lumped approach. Both the mechanisms, developed to describe the high temperature oxidation and to explore the important reaction classes which control the auto-ignition behaviour of n-butanal, are found to be well in agreement with the experimental data.
2013
European Combustion Meeting 2013
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/758255
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