斯特林发动机气缸内部工质流场特性的数值模拟  

Numerical simulation study on the characteristics of flow field in cylingder of Stirling engine

作　　者：黄军卫[1] 彭佑多[1] 刘繁茂[1] 常腾飞[1] 彭长清[1] 尹喜[1] 李白雅[1] 

机构地区：[1]湖南科技大学机械设备健康维护省重点实验室,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》2012年第4期27-31,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：湖南省省市联合基金(11JJ8006);湖南省战略性新型产业重大科技攻关项目(2011GK4058);湖南省科技厅项目(2011FJ6028)

摘　　要：运用计算流体力学(CFD)方法对斯特林发动机气缸内部工质的流场进行了数值模拟.应用FLUENT软件,采用标准的κ-ε模型、使用动网格模拟发动机活塞的往复运动.计算结果表明:发动机气缸内部流场极其复杂,膨胀腔和压缩腔内的速度场、压力场以及温度场随活塞运动动态变化,回热器内温度和速度呈线性分布.该方法为气缸结构的优化设计提供了理论依据.Computational fluid dynamics（CFD） method was used to simulation the charateristics of flow filed in cylinder of stirling engine, by using of FLUENT software, with the standardκ-ε model, and adopting dynamic mesh to reflect the reciprocating motion of the pistons. The calculation results show that the flow is very complicated in cylinder. The velocity, pressure and temperature field in expansion and compression space changed with position motion. Temperature and velocity in the regenerator distribution almost linearly along its length. This method provides a therotical basis for the optimization design of cylinder structure.

关 键 词：斯特林发动机 κ-ε模型 动网格 数值模拟 

分 类 号：TD407[矿业工程—矿山机电] X506[环境科学与工程—环境工程]