Prior studies have shown the importance of interfacial behavior on droplet secondary breakup and fuel distribution in diesel engines. These investigations have focused on the accurate evaluation of high-pressure phase equilibrium and surface tension coefficient at thermodynamic conditions relevant to diesel engine operation. This approach is extended here to account for droplet heat transfer, mass transfer, and dynamic behavior in order to adequately account for the relative magnitude of the droplet heating and species diffusion times (which control surface tension) as compared to the droplet dynamics characteristic time (over which the slip velocity vanishes) and the time required to reach interfacial equilibrium.

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