机械科学与技术2018，Vol.37Issue(7)：998-1004,7.DOI:10.13433/j.cnki.1003-8728.2018.0701
喷油嘴喷孔结构参数对甲醇燃料喷射流场影响的数值模拟
Effect of Nozzle Nozzle Structural Parameters on Flow Field of Methanol Fuel Injection
摘要
Abstract
According to the different physical and chemical properties of methanol fuel from gasoline,and the difficulty of cold start of methanol engine,we choose the nozzle of methanol engine as the research object.The gasliquid two-phase VOF turbulence model in Fluent software is used to simulate the nozzle flow.The study finds that the fillet changes in the inlet nozzle and inverted cone angle changes of nozzle have certain influence on nozzle flow field.The results show that under the condition of constant pressure,the thickness of the negative pressure layer decreases with the increase of the radius of curvature at the entrance,the volume fraction of the gas phase decreases and the atomization performance decreases.With the increase of nozzle curvature radius,the flow rate increases.Increasing the inverted cone angle of the nozzle hole,the flow rate at the nozzle outlet is reduced,the mass flow rate is reduced,but the thickening of the negative pressure layer is favorable for the atomization of the methanol fuel.关键词
甲醇燃料/喷油嘴微孔/倒锥角/FLUENT/数值模拟Key words
methanol fuel nozzle/microstructure/inverted cone angle/Fluent/numerical analysis分类
能源科技引用本文复制引用
王鹏里,董志国,轧刚,段泽斌..喷油嘴喷孔结构参数对甲醇燃料喷射流场影响的数值模拟[J].机械科学与技术,2018,37(7):998-1004,7.基金项目
国家自然科学基金项目(51575375)资助 （51575375）
