Droplet Vaporization in a High-Pressure Gas

Abstract
Evaporation of single, liquid droplets in a high-temperature, high-pressure gaseous environment has been investigated experimentally. The effects of gas temperature, pressure, and strength of naturally occurring convective flows were studied. Pure hydrocarbon (n-heptane) and trichlorotrifluoroethane (R-113) droplets were vaporized in a nitrogen atmosphere within a sealed chamber, which was developed to minimize forced convection. Experiments were carried out in normal and microgravity (~ 10−5 g) fields in order to examine the effect of natural convection. A single droplet was attached to the end of a quartz fiber. The gas temperature and pressure were raised quickly by a compressive process. The gas temperature and pressure were varied from 0.93

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