NUMERICAL AND EXPERIMENTAL-STUDY OF THE E VAPORATION OF ONE OR MANY MIXED CARBURANTS DROPS IN A HOT FLOW

The vaporization of one or two multi-component fuel droplets in hot ai r-stream is presented. A thermal wind tunnel with experimental channel has been designed to develop an experimental process. Firstly, the co mparison between experimental results and numerical data is presented for the case of an isolated multi-component droplet. The numerical met hod is based on the resolution of heat and mass transfer equations bet ween the droplet and the gas stream. This model includes the effect of Stephan flow, the effect of variable thermophysical properties of the components, and the non-unitary Lewis number in the gas film. The exp erimental results show the micro-explosion phenomenon observed in the liquid phase of multi-component droplet at low temperature. The experi mental case of two pure or multi-component droplets in interaction is also presented.