摘要
基于KH-RT液滴破碎模型对定容燃烧弹内生物柴油-正丁醇混合燃料的喷雾贯穿距离、喷雾锥角、索特平均粒径、速度场以浓度场进行数值模拟,通过定容燃烧弹试验台架获取的生物柴油-正丁醇混合燃料的喷雾特性对数值模型进行验证,结果表明:随着喷射压力的增加,BD70N30混合燃料的喷雾贯穿距和喷雾锥角增加;索特平均粒径降低;雾束中心高速区域增大且高浓度区域减小。增大喷射压力更易于BD70N30混合燃料的破碎与蒸发。
Based on KH-RT droplet breakage model of constant volume Molotov cocktails in biodiesel-n-butyl alcohol mixed fuel spray through the distance,spray cone Angle,sauter mean diameter,velocity field numerical simulation on concentration field,through the constant volume Molotov cocktails test-bed for biodiesel-n-butyl alcohol mixed fuel spray characteristics to validate the numerical model,the results show that:With the increase of injection pressure,the spray penetration distance and spray cone Angle of BD70N30 mixture fuel increase.Sault average particle size decreased;The high speed area in the center of fog beam increases and the high concentration area decreases.Increasing the injection pressure makes it easier for BD70N30 mixture fuel to break and evaporate.
作者
袁文华
侯映雪
伏军
颜飞斌
王振
吴磊
YUAN Wen-hua;HOU Ying-xue;FU Jun;YAN Fei-bin;WANG Zhen;WU Lei(School of Mechanical and Energy Engineering,Shaoyang University,Shaoyang 422000,China;Key Laboratory of Intelligent Manufacturing of High Efficiency Power System of Hunan Province,Shaoyang 422000,China;School of Energy and Power Engineering,Jiangsu University,Zhenjiang 212013,China)
出处
《内燃机与配件》
2022年第4期67-70,共4页
Internal Combustion Engine & Parts
基金
国家自然科学基金,项目微型自由活塞发动机HCCI催化燃烧稳定性机理与多场协同优化研究(52076141)
湖南省教育厅重点项目,临界条件下高强化柴油机喷雾与蒸发模型的研究(18A395)
湖南省研究生科研创新项目,混合燃料喷雾特性研究(CX20201176)
邵阳学院研究生科研创新项目(CX2020SY003)。
