Abstract Atomization characteristics with viscosity have motivated a number of works to investigate the flow behavior with temperature variation. An experimental study on the atomization characteristics of an aviation fuel was performed to investigate the effects of fuel temperature and its physical properties on the atomization quality and spray structure. A pressure-swirl-type atomizer as a wide-range-applicable nozzle in industrial field and gas turbine combustors was employed to inject the aviation fuel into a gaseous medium. The experiments were conducted by optical diagnostic methods, namely, phase Doppler particle analyzer (PDPA) to measure droplet size and velocity and particle image visualization to capture spray structure. Changes in physical properties of the fuel altered the spray structure, droplet distribution, and atomization quality, which apparently are effective in combustion efficiency and combustion products. Spray development was mapped with the effective parameters from the unstable to fully developed stage. It was also found that decreasing the fuel temperature degrades atomization quality, decreases spray angle and velocity component values, and generates a lower number of fine droplets. Pursuing the effects of injection pressure and temperature on the atomization characteristics led to correlations for predicting spray angle and mean SMD. The findings contribute well to the literature and clarify the atomization process with temperature variation.

中文翻译：

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粘度对替代航空燃料压力旋流雾化的影响

摘要 具有粘度的雾化特性激发了许多研究随温度变化的流动行为的工作。通过对某航空燃料雾化特性的实验研究，研究了燃料温度及其物理特性对雾化质量和喷雾结构的影响。采用压力旋流型雾化器作为工业领域和燃气轮机燃烧器中广泛适用的喷嘴，将航空燃料喷射到气态介质中。实验是通过光学诊断方法进行的，即相位多普勒粒子分析仪 (PDPA) 来测量液滴尺寸和速度，以及粒子图像可视化以捕获喷雾结构。燃料物理性质的变化改变了喷雾结构、液滴分布、和雾化质量，这显然对燃烧效率和燃烧产物有效。喷雾发展被映射到从不稳定到完全发展阶段的有效参数。还发现降低燃料温度会降低雾化质量，降低喷雾角度和速度分量值，并产生较少数量的细小液滴。追求喷射压力和温度对雾化特性的影响导致预测喷雾角度和平均 SMD 的相关性。这些发现对文献有很好的贡献，并阐明了温度变化的雾化过程。还发现降低燃料温度会降低雾化质量，降低喷雾角度和速度分量值，并产生较少数量的细小液滴。追求喷射压力和温度对雾化特性的影响导致预测喷雾角度和平均 SMD 的相关性。这些发现对文献有很好的贡献，并阐明了随温度变化的雾化过程。还发现降低燃料温度会降低雾化质量，降低喷雾角度和速度分量值，并产生较少数量的细小液滴。追求喷射压力和温度对雾化特性的影响导致预测喷雾角度和平均 SMD 的相关性。这些发现对文献有很好的贡献，并阐明了随温度变化的雾化过程。