Potential alternative fuels that can mitigate environmental pollution from gas turbine engines (due to steep growth in the aviation sector globally) are getting significant attention. Spray behavior plays a significant role in influencing the combustion performance of such alternative fuels. In the present study, spray characteristics of Kerosene-based fuel (Jet A-1) and alternative aviation fuels such as butyl butyrate, butanol, and their blends with Jet A-1 are investigated using an air-blast atomizer under different atomizing air-to-fuel ratios. Phase Doppler Interferometry has been employed to obtain the droplet size and velocity distribution of various fuels. A high-speed shadowgraphy technique has also been adopted to make a comparison of ligament breakup characteristics and droplet formation of these alternative biofuels with that of Jet A-1. An effort is made to understand how the variation in fuel properties (mainly viscosity) influences atomization. Due to the higher viscosity of butanol, the SMD is higher, and the droplet formation seems to be delayed compared to Jet A-1. In contrast, the lower viscosity of butyl butyrate promotes faster droplet formation. The effects of the blending of these biofuels with Jet A-1 on atomization characteristics are also compared with that of Jet A-1.

可以减轻燃气涡轮发动机环境污染的潜在替代燃料（由于全球航空业的急剧增长）正受到广泛关注。喷雾行为在影响此类替代燃料的燃烧性能方面起着重要作用。在本研究中，使用鼓风雾化器在不同雾化空气条件下研究了煤油基燃料 (Jet A-1) 和替代航空燃料如丁酸丁酯、丁醇及其与 Jet A-1 的混合物的喷雾特性。燃料比。相位多普勒干涉仪已被用于获得各种燃料的液滴尺寸和速度分布。还采用了高速阴影成像技术来比较这些替代生物燃料与 Jet A-1 的韧带断裂特性和液滴形成。努力了解燃料特性（主要是粘度）的变化如何影响雾化。由于丁醇的粘度较高，SMD 较高，与 Jet A-1 相比，液滴形成似乎有所延迟。相反，丁酸丁酯的较低粘度促进更快的液滴形成。将这些生物燃料与 Jet A-1 混合对雾化特性的影响也与 Jet A-1 进行了比较。与 Jet A-1 相比，液滴的形成似乎有所延迟。相反，丁酸丁酯的较低粘度促进更快的液滴形成。将这些生物燃料与 Jet A-1 混合对雾化特性的影响也与 Jet A-1 进行了比较。与 Jet A-1 相比，液滴的形成似乎有所延迟。相反，丁酸丁酯的较低粘度促进更快的液滴形成。将这些生物燃料与 Jet A-1 混合对雾化特性的影响也与 Jet A-1 进行了比较。