Data from: Experimental and numerical investigations on spray characteristics of fatty acid methyl esters

The comparative experimental and numerical study is conducted to establish the significance of the use of single component over the multi-component representative of the biodiesel, diesel and their blend for predicting the spray tip penetration. The single component representatives of biodiesel, methyl oleate and methyl laurate and for the diesel are n-heptane, n-dodecane and n-tetradecane are studied. The methyl laurate is found to represent biodiesel of coconut, whereas methyl oleate is found to represent biodiesel having high percentage of long-chain fatty acid esters. The spray tip penetration of methyl oleate is found to be in good agreement with the measured spray tip penetration of karanja biodiesel. The spray tip penetration prediction of n-heptane fuel is closely following diesel spray tip penetration along with that of n-tetradecane and n-dodecane. The study suggests that the knowledge of the single component representative of biodiesel, diesel and their blend is sufficient to predict the spray tip penetration of the corresponding biodiesel, diesel and their blend under non-evaporating environment.

本研究通过对比实验与数值模拟，旨在明确在预测喷雾贯穿距（spray tip penetration）时，采用单组分替代物相较于多组分替代物（应用于生物柴油、柴油及其混合燃料）的实际应用价值。本研究所选用的单组分替代物如下：生物柴油的替代物为油酸甲酯（methyl oleate）与月桂酸甲酯（methyl laurate），柴油的替代物为正庚烷（n-heptane）、正十二烷（n-dodecane）与正十四烷（n-tetradecane）。研究发现，月桂酸甲酯可用于替代椰子基生物柴油，而油酸甲酯则适用于替代长链脂肪酸酯占比较高的生物柴油。实测结果表明，油酸甲酯的喷雾贯穿距与水黄皮生物柴油（karanja biodiesel）的实测喷雾贯穿距吻合度极佳。正庚烷燃料的喷雾贯穿距预测结果与柴油、正十四烷及正十二烷的实测喷雾贯穿距高度一致。本研究结论显示，在非蒸发环境下，仅需掌握生物柴油、柴油及其混合燃料的单组分替代物相关参数，即可准确预测对应燃料的喷雾贯穿距。