Abstract
Abstract An experimental facility has been developed to study the effects of turbulence on droplet vaporization. The facility allows lo generate a zero mean velocity, isotropic and homogeneous turbulence and to vary systematically the turbulence kinetic energy. The influence of turbulence on suspended single droplets of five n-alkane hydrocarbons is investigated, by determining the average vaporization rates by image analysis techniques. The experiments have been conducted under normal pressure and temperature conditions; for all cases, the length scales of energetic turbulence eddies are larger than the initial droplet diameter. For all the investigated cases, it is found that the presence of turbulent velocity fluctuations increases the average vaporization rates compared to the stagnant case. The linear regression rate of the projected droplet surface area versus time is observed under all turbulence conditions. It is observed that droplets of the five investigated fuels respond differently to the same...
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