摘要
根据可视化试验的结果,利用计算流体力学的方法对生物柴油和柴油的喷雾进行模拟,建立了三维仿真模型,并验证了模型的正确性。利用该模型研究了生物柴油和柴油的喷雾特性,计算了不同喷孔直径对喷雾贯穿距离、索特平均直径等的影响。研究结果表明:生物柴油的雾化特性与柴油不同,柴油的雾化特性更好;减小喷孔直径缩短了生物柴油的喷雾贯穿距离,而且有助于液滴的破碎和雾化。
With the aid of computational fluid dynamics （CFD） method, the spray characteristics of bio-diesel fuel and diesel fuel were simulated using the results of visual experiment, and a 3D simulation model was established and validated. The spray characteristic difference between bio-diesel fuel and diesel fuel was studied. The spray penetration and the sauter mean diameter （SMD）, which were influenced by the diameter of the nozzle hole, were studied by means of this model. The results show that the atomization process of bio-diesel fuel is different from that of diesel fuel and diesel fuel has a better atomization characteristic. Decreasing the size of the nozzle hole can shorten the spray penetration, and smaller size of nozzle hole can enhance the breakup and atomization of the fuel droplets.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2009年第5期17-21,共5页
Chinese Internal Combustion Engine Engineering
关键词
内燃机
生物柴油
柴油
喷雾特性
数值模拟
计算流体力学
IC engine
bio-diesel fuel
diesel fuel
spray characteristic
numerical simulation
computational fluid dynamic（CFD）
作者简介
作者简介：姜磊（1981-），男，博士生，主要研究方向为内燃机排放控制技术，E—mail：jldna@bit．edu．cn。
