Summary
The different spreading regimes above liquid fuels have been experimentally characterized for surface temperatures close to the flash-point temperature. Two different spreading regimes are observed: for temperatures larger than some critical value, flame spreading velocity is well described by the De Ris solid fuel-like model. For temperature values lower than the critical one, a preheating thermocapillary region has been observed in the fuel, which can be described by a purely thermodynamic non-reactive model. The critical transition temperature has shown to present common characteristics for the four alcohols used in the experiments.
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Degroote, E., García Ybarra, P. Flame propagation over liquid alcohols. J Therm Anal Calorim 80, 549–553 (2005). https://doi.org/10.1007/s10973-005-0692-8
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DOI: https://doi.org/10.1007/s10973-005-0692-8