
1. 天津职业技术师范大学汽车与交通学院
2. 天津大学先进内燃动力全国重点实验室
3. 中国民航大学航空工程学院
Published:2026
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耿杰, 甄旭东, 田智, et al. 双油路离心式喷嘴的雾化特性数值分析[J]. 2026, 44(1): 48-57.
耿杰, 甄旭东, 田智, et al. 双油路离心式喷嘴的雾化特性数值分析[J]. 2026, 44(1): 48-57. DOI: 10.16236/j.cnki.nrjxb.202601006.
基于计算流体动力学软件Fluent,采用欧拉两相流方法模拟双油路离心式喷嘴在典型工况下的内部流动情况,用V-D模型计算外部流场液膜破碎过程和粒度分布特性,结果表明:主油路空气芯表面呈现形状不均匀性和周期性顺时针转动,在液膜表面生成与结构相关的四处扰动;主、副油路同时工作时,副油路燃油更早喷出.副油路单独工作时,在主、副油路相遇位置液膜出现破口断裂,随后在不稳定表面波作用下,分别破碎成周向液丝状和轴向条状结构,两种不稳定波同时出现、相互影响,导致雾场呈现周向分布不均匀性.主、副油路同时喷油时两雾锥互不干扰,锥角测量以主油路为主,但小于主油路单独工作的锥角.当副油路入口压力降至0.4 MPa时,两雾锥相互干涉,在空心锥中间呈不规则分布.破碎后粒子转化过程采用V-D算法结合WAVE模型,得到粒径在距喷嘴4 mm截面上的分布.
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