柴油机进气过程三维瞬态数值模拟研究  

Three-Dimensional Transient Numerical Simulation on Intake Process in Diesel Engine

作　　者：何文剑[1] 孙平[1] 王唯栋[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《车辆与动力技术》2011年第4期33-37,58,共6页Vehicle & Power Technology

摘　　要：利用三维造型软件Pro/E实现了螺旋进气道-气门-气缸的三维实体模型;运用FIRE软件对三维模型进行了进气流动的瞬态数值模拟,获得进气过程中气缸内部流场的速度场和湍动能的变化规律;揭示缸内涡流从多涡流结构向单涡流结构的形成过程.阐述了瞬态模拟和稳态模拟计算方法的不同之处,对两者模拟结果进行了对比,揭示了瞬态模拟的优越性.A 3-D model including helical intake ports,valves and cylinders was established by the software Pro/E.A transient flow is simulated by FIRE of AVL software.The variation law of the flow velocity field and its turbulent kinetic energy was obtained in intake process.The changing process of vortex pattern in cylinder was showed.The difference between transient analysis and steady simulation was explained in calculation method.The comparison results clarified that the transient simulation was of superiority.

关 键 词：柴油机 螺旋进气道 数值模拟 进气流动 

分 类 号：TK421.3[动力工程及工程热物理—动力机械及工程]