长链醇的添加对航空煤油宏观喷雾特性的影响

长链醇被认为是有前景的替代燃料和燃料添加剂。 本工作旨在研究将长链醇与航空煤油混合对宏观喷雾特性的影响。本研究选择正丁醇和正戊醇作为实验所用替代燃料,使用共轨喷射系统产生高压喷射条件。 使用纹影成像系统捕获喷雾过程。 结果表明,随着长链醇的添加,喷雾贯穿度和峰值速度增大,而喷雾锥角和喷雾面积减小。 还对AKB混合物和AKP混合物的宏观喷雾特性进行了比较。 与AKB混合物相比,AKP混合物表现出相似的喷雾贯穿度,更大的峰值速度,更小的喷雾锥角和喷雾面积。

Effects of blending long-chain alcohols with aviation kerosene on the macroscopic spray characteristics

Long-chain alcohols were considered to be promising alternative fuels and fuel additives. This study was aimed at figuring out the influences of blending long-chain alcohols with aviation kerosene on the macroscopic spray characteristic. N-butanol and n-pentanol were chosen as tested alternative fuels. A common-rail injection system was used to create high-pressure injection conditions. A Schlieren imaging system was used to capture spray processes. Results showed that with the addition of long-chain alcohols, the spray tip penetration and the peak spray tip velocity increased, whereas the spray cone angle and the spray area decreased. Comparisons between those macroscopic spray characteristics of AKB blends and AKP blends were also conducted. Compared to AKB blends, AKP blends showed similar spray tip penetration, larger peak tip velocity, smaller spray cone angle and smaller spray area.