内燃机工程2025，Vol.46Issue(4)：10-18,9.DOI:10.13949/j.cnki.nrjgc.2025.04.002
喷射参数对甲醇进气道喷雾液滴粒径分布的影响
Influences of Injection Parameters on the Droplet Size Distribution of Methanol Intake Port Spray
摘要
Abstract
A three-dimensional numerical simulation model was developed to investigate the impact of key parameters including injection pressure,orifice diameter,injection direction,and incoming flow velocity on the droplet size distribution of methanol spray.The results reveal that increased injection pressure leads to a shift of the droplet size distribution towards smaller droplet sizes,accompanied by reduction in Sauter mean diameter(SMD)as well as characteristic diameters DV10,DV50 and DV90(DVX refers to the droplet size of the droplets which accounts for X%of the spray dropet cluster).As the orifice diameter decreases,SMD and characteristic diameters of methanol spray droplets decrease,and the span of droplet size(SDS)and wall film quality also decrease.When the injecting angle is 45° against reverse incoming flow,more small-sized droplets are generated.Increasing the incoming flow velocity causes the spray droplet size distribution to shift towards smaller sizes,resulting in decreased SMD and characteristic diameters.关键词
甲醇进气道喷射/液滴粒径分布/喷射压力/喷孔直径/喷醇方向Key words
methanol port injection/droplet size distribution/injection pressure/orifice diameter/methanol injection direction分类
能源科技引用本文复制引用
庞斌,廉子凡,张洋洋,孙振宇,李卫,潘家营..喷射参数对甲醇进气道喷雾液滴粒径分布的影响[J].内燃机工程,2025,46(4):10-18,9.基金项目
国家自然科学基金项目(52222604,T2341001) National Natural Science Foundation of China(52222604,T2341001) （52222604,T2341001）
