柴油机活塞-缸套的瞬态传热有限元分析  

FEA on transient heat transfer from piston to cylinder liner of diesel engine

作　　者：高鹏[1] 韩振南[1] 

机构地区：[1]太原理工大学机械工程学院,山西太原030024

出　　处：《矿山机械》2015年第2期120-125,共6页Mining & Processing Equipment

基　　金：国家自然科学基金资助项目(50775157);山西省高等学校留学回国人员科研基金资助项目(2011-12)

摘　　要：针对柴油机活塞-缸套相对运动传热过程中,其运动部分边界条件及加载难以确定等问题,笔者采用稳态传热模拟结果和经验公式得到瞬态传热初始条件和边界条件,结合ANSYS中广泛应用的移动载荷方法,对4100QBZ柴油机活塞-缸套中一个工作循环的传热过程进行了模拟仿真,并分析了其整体温度分布和温度变化的原因。研究结果表明,使用ANSYS移动载荷方法,对燃气侧运动部分的边界条件加载可行,并可使计算过程更为简单,同时使传热模拟过程更加符合实际工作状态。In view of difficult determination of the boundary conditions and loads of moving components during transient heat transfer from the piston to the cylinder liner of the diesel engine, the simulation results and empirical formulas of steady-state heat transfer were used to obtain the initial conditions and boundary conditions of transient heat transfer. In addition, the moving-load method widely used in ANSYS was combined to simulate one cycle of heat transfer from the piston to the cylinder liner of a 4100QBZ diesel engine, and overall temperature distribution and cause of temperature variation were analyzed. The study results showed the ANSYS moving-load method was feasible for determination of boundary conditions and loads of the moving components in the gas side, which led to simpler calculation process and more realistic simulation of the heat transfer.

关 键 词：活塞-缸套 有限元分析 瞬态 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]