二甲基醚发动机热力循环模拟与参数分析  

Thermodynamic cycle simulation and parametric analysis for the engine fueled with DME

作　　者：石宇[1] 张煜盛 张勇[1] 

机构地区：[1]华中科技大学能源与动力工程学院,武汉430074

出　　处：《船海工程》2004年第3期19-23,共5页Ship & Ocean Engineering

摘　　要：用零维热力学模型模拟计算二甲基醚发动机的燃烧放热率 ,将模拟计算结果与实验结果进行对比 ,两者数据吻合 ;在对三种热力学模型的预测结果进行对比分析的基础上 ,选取与实验值吻合最好的Watson模型对相同结构和运行参数的DME发动机与柴油机进行计算对比 ,结果符合理论分析与实验观察 ;说明零维模型不仅适用于柴油机的性能预测分析 。This paper presents computational method of heat release rate of DME engines by numerical simulation based on zero-dimensional model.The result of simulations are compared with experimental data, the good agreement between them are obtained. Three well documented heat release models are investigated and the Watson model is proved to be the best by making comparison between their predicting results and experimental data .Then the Watson is used to simulate the effects of operation parameters on pressure diagram and heat release characteristics and the results are accord with analysis of theory and observation of experiment.The result shows that zero-dimensional model is suitable to predicting performance characteristics of engines operated with DME besides diesel engines.

关 键 词：船舶工程 船舶燃料 二甲基醚 零维模型 发动机 热力循环模拟 

分 类 号：U677[交通运输工程—船舶及航道工程]