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碳烟氧化模型的研究及在车用柴油机中的计算应用

A Study on Soot Oxidation Model and Its Application to the Numerical Simulation of Vehicle Diesel Engine
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摘要 提出了一个基于平均反应率的碳烟氧化模型,将其应用于柴油机数值模拟中,并结合试验方法研究了后喷射对碳烟排放的影响。将Hiroyasu碳烟生成模型和文中提出的碳烟氧化模型耦合在CFD源程序中构建多维模型,利用数值解析的手段,根据不同的后喷射方案计算柴油机碳烟的生成和氧化历程,并结合试验数据分析后喷射影响碳烟氧化的各种因素。研究结果表明,采用碳烟氧化模型和试验方法能真实反映柴油机碳烟的生成和氧化历程以及后喷射对碳烟排放的影响规律。 A mathematical model for soot oxidation based on average reaction rate is presented and applied to the numerical simulation of diesel engine. Firstly, the Hiroyasu model for soot formation and the model for soot oxidation are incorporated into the CFD code to construct a multidimensional model. Then, a numerical simulation on the process of soot formation and oxidation is performed according to different post-injection schemes. Finally the effects of post-injection parameters on soot oxidation are analyzed by tests. The results show that using soot oxidation model combined with tests can truly reveal the process of soot formation and oxidation as well as the influence rule of post-injection on soot emissions.
作者 石秀勇 李国祥 周雷 郑媛媛
机构地区 山东大学能源与动力工程学院 山东交通学院
出处 《汽车工程》 EI CSCD 北大核心 2007年第8期649-653,共5页 Automotive Engineering
关键词 柴油机 碳烟氧化模型 平均反应率 数值模拟 Diesel engine Soot oxidation model Average reaction rate Numerical simulation
分类号 U464.172 [机械工程—车辆工程]
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参考文献11

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二级参考文献12

  • 1Glassman I. Combustion[M]. New York:Academic Press,1977,362-363.
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共引文献6

汽车工程
2007年 第8期

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