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Simulation of Fe 2 O 3 / Al combustion: Sensitivity analysis

2007; Elsevier BV; Volume: 62; Issue: 18-20 Linguagem: Inglês

10.1016/j.ces.2007.01.070

1873-4405

Paulo Brito, Luísa Durães, J. Campos, António Portugal,

nanoparticles nucleation surface interactions

The sensitivity of a one-dimensional model, built to simulate the non-steady radial combustion propagation on thin circular samples of Fe2O3/aluminium thermite mixtures, was tested in relation to its least reliable thermophysical properties and to non-homogeneities in the initial reactant media. Zero order kinetics and conductive/radiative heat transfer were considered. The model is quite insensitive to variations of most of the properties studied. The highest sensitivity detected concerned aluminium conductivity. The non-uniform reactant mixing significantly affected the results, suggesting that experimental variability is partially explained by this feature.