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Dynamic evolution of low-viscosity fuel particle distribution driven by constant flow

Chinese Physics B 2023年第7期32卷 416-427页

作者：杨仲坤安高军徐曦萌郑哲王永旭解立峰张丹李斌 School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing 210000China Institute of Systems Engineering AMSPLABeijing 100000China

The effects of mass concentration and injection pressure on the atomization characteristics of low-viscosity fuel spray are studied in a constant-volume *** spray parameters are measured by laser diffraction at different axial and radial positions downstream of the *** results show that the atomization effect is inhibited linearly with the increase of mass *** increase of injection pressure promotes the droplet ***,the trend gradually weakens and becomes more noticeable at high *** with the concentration,the influence of the injection pressure on the atomization characteristics is *** low concentration and high injection pressure can promote the droplet breakup,they also increase the probability of droplet collision,resulting in droplet *** is more evident in low-viscosity *** droplet size increases in the axial direction owing to the ***,the diameter decreases in the radial direction owing to the outward deflection of small droplets caused by air turbulence and *** addition,the high-velocity airflow significantly promotes the droplet breakup near the nozzle and spray axis regions and inhibits the aggregation ***,the lower-viscosity fuels keep smaller droplet sizes and better atomization in the whole spraying process,which is easier to realize than the higher-viscosity ***,low concentration,high injection pressure,and low viscosity of fuel have beneficial effects on the droplet *** is very important for improving the atomization effect of fuel.

关键词： low-viscosity fuel spray and atomization particle distribution laser diffraction

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