Evaporative behavior characteristics of emulsified fuels containing diesel and hydrogen peroxide

In this study, the effects of the mixing ratio of hydrogen peroxide in diesel-hydrogen peroxide emulsified fuels were analyzed using evaporative characteristics. A surfactant with 3 of total volume was added to create an emulsified fuel of diesel and hydrogen peroxide. An experimental study was conducted on mixing ratios in five diesel and hydrogen peroxide fuels (EF2, EF12, EF22, EF32, and EF42). In this experiment, one droplet of emulsified fuel was evaporated using a heat plate, and the Schlieren method was used to visualize the vapor. Furthermore, a numerical analysis was conducted based on the experimental results using a commercially available program (ANSYS CFX). These results showed that a micro-explosion was caused by the evaporation of the hydrogen peroxide in the emulsified fuel, and as the mixing ratio increased, the evaporation became active. Additionally, a simulation of the micro-explosion was proposed via calculation of the volume fraction of hydrogen peroxide. © 2017 The Korean Society of Mechanical Engineers.