用蒙特卡洛法计算柴油机缸内多元热辐射

Calculation of the Radiation Heat Transfer in Cylinder of Diesel Engine by the Monte-Carlo Method

采用柴油机气缸内辐射传热多区 (多维 )模型 ,对ω型燃烧室空间和曲面作与辐射多区模型相适应的数学处理和网格划分。充分考虑了燃烧室复杂的几何形状及气缸内不均匀的物性参数对辐射传热的影响 ,利用蒙特卡洛法计算燃烧室各壁面的辐射热流分布 ,同时还对油滴散射对热辐射的影响作了有益探索。结果表明本文所提供的模型和计算方法 。

A multi-zone & multi-dimensional radiation heat transfer model in cylinder of D.I.diesel engine is adopted in this paper.The ω-combustion chamber and surface are treated and divided with mathematics approximation more accurately.All of this is fully concerned of the complex structure of the combustion chamber and the uneven dispersion of the media.The Monte-Carlo method is used to calculate the radiation heat transfer in cylinder at last.