The results of a numerical and experimental investigation into the evaporation characteristics of the 3-pentanone–isooctane binary system are presented. The behaviour of the system is shown to be nonideal, exhibiting positive deviations from Raoult's law. Thus, the evaporation characteristics of 3-pentanone–isooctane mixtures are shown to be controlled by the relative mole fractions of the two components contained within the liquid phase. The preferential evaporation of 3-pentanone from mixtures containing low concentrations of 3-pentanone is predicted numerically and is confirmed experimentally. The implications of this result with respect to the use of 3-pentanone as a fluorescence marker for isooctane fuel in engine research are discussed at length. The influence high 3-pentanone concentrations on the atomisation behaviour and the optical depth of 3-pentanone–isooctane mixtures is predicted and discussed.
Experiments in Fluids – Springer Journals
Published: Jun 18, 2003
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