柴油机循环模拟中耦合瞬态传热模型的研究  

A Study on a Coupling Instntaneous Heat Transfer Model in the Cyle Simulation for Diesel Engines

作　　者：陈国华[1] 

机构地区：[1]华中理工大学

出　　处：《车辆与动力技术》1990年第4期24-30,共7页Vehicle & Power Technology

基　　金：国家自然科学基金

摘　　要：本文叙述了一个用于柴油机循环模拟研究的瞬态传热模型。其中缸内对流传热采用了紊流模型;辐射传热考虑了绝热火焰温度和平均气体温度的影响;燃烧室壁热传导采用了周期性瞬态热传导模型。该模型与柴油机热力循环模型相耦合,用于预测柴油机的周期性瞬态传热过程,包括瞬态对流传热系数、瞬态对流和辐射传热率以及燃烧室表面的温度波动现象。文中还介绍了该模型的应用情况。The paper proposes an instantaneous heat transfer model to study the cycle simulatiou for Diesel engines.In the model, a turbulent flow model is used for the convective heat transfer; the effect of the adiabatic flame temperature and average bulk gas temperature is considered for radiative heat rtansfer; a cyclic instantaneous heat conduction model is used for the heat couduction.The coupling model of this model with a Diesel engine cycle simulation model is used to predict the cyclic instantaneous heat transfer processes of Diesel engines.An application example of the model is presented in the paper.

关 键 词：瞬态传热模型 绝热火焰温度 平均气体温度 

分 类 号：TJ811[兵器科学与技术—武器系统与运用工程]