ID 158

The Splash-Deposition Transition Limits Of A Biofuel Droplet Wall Impact With And Without Crossflow

 

Abstract:

Over the last years, there have been many investigations into new ways to obtain clean and efficient energy production. In this spirit, this study aims to successfully adapt low emission aero-engines combustors to burn biofuels. Biofuels are the immediate alternative to fossil-fuel powered aero-engines, given that by regulation is possible to apply today, a biofuel into the aeronautical industry. There are some regulations to have into account, being the biggest one the fact that the new blend must be constituted of at least 50 % of conventional jet fuel (JF). In this work were selected four blends to study: 100% JF; 75% JF and 25% NEXBTL (biofuel); 50% JF and 50% NEXBTL and H2O. A smooth, dry aluminum plate was used as the impact surface and the objective was to observe the splash-deposition limits and characterize the dynamic behavior of the droplets with and without crossflow. Different velocities of the crossflow were chosen and the impact angle of the droplet was also analyzed. The splash-deposition threshold was also compared with those proposed by other authors.