Research On The Thermal Effect And Kinetic Parameters Of Liquid Fuel Droplet Evaporation

Evaporation of liquid fuel atomization is an important element in the combustion process, it is an effect means to improve the combustion efficiency by improving the quality of liquid fuel atomization. In this paper, we study the fuel droplet of n-dodecane.At first, the droplet evaporation process which is under high temperature and non-isothermal droplet model was simulated.then investigate the effect of radiation temperature, ambient temperature and ambient pressure on the droplet evaporation.we also study the heating characteristic and thermal expansion of droplet boiling under high temperature and analyzed the energy supply characteristics of droplet.Studies have shown that,There was two-way supply characteristic of energy inside the droplet.further improve the radiation temperature, parts of the droplets will boiling and bubbles will generated by boiling.Through calculating,the initial growth rate of bubbles was very fast,the changes of surface tension has impact on the evaporation and boiling of the droplet.finally we have a brief analysis of the dynamic model of liquid fuel.we simulated the droplet evaporation and investigated the We number changes in the process of evaporation under high temperature,the results show that the Weber number of droplet first increase and then decrease in high radiation environment,the changes in environmental parameters have great impact on it, and they were analyzed and discussed in detail.By simulation, we studied the whole process of heated droplet evaporation in detail and have a more in-depth understanding of this process.we drawn some conclusions with reference value which laid the foundation for the further study characteristics of the high-energy droplets.