适用于hcci的正庚烷化学动力学简化模型的研究和比较
Keywords: 正庚烷,简化化学动力学模型,均质压燃(hcci)发动机,模型比较
Abstract:
利用敏感性分析、主要组分分析以及准稳态假定3种方法,将含有44种组分和72个反应的skle正庚烷简化模型再简化到40种组分和56个反应;简化后的模型对滞燃期的预测结果与llnl详细模型非常接近,与激波管实验结果基本吻合,适用于hcci发动机的多维模型的计算.与其他模型比较发现,patel等人的模型缺少在低温区起关键作用的反应,即二次加氧反应(?qooh+o2?ooqooh),而tanaka等人的模型缺少了co的主要生成历程;在hcci发动机典型工况范围内,skle简化模型预测着火时刻与llnl详细模型吻合最好,tanaka等人模型和patel等人模型表现稍差,说明构建简化动力学模型时必须保证低温反应路径主干完整,同时不能忽略co的主要生成历程.
References
[1] | lindstedtrp,mauricelq.detailedkineticmodelingofn-heptanecombustion[j].combustionscienceandtechnology,1995,107:317-353.
|
[2] | curranhj,gaffurip,pitzwj,etal.acomprehensivemodelingstudyofn-heptaneoxidation[j].combustionandflame,1998,114(1/2):149-177.
|
[3] | golovitchevvl,atarashiyak,tanakak,etal.towardsuniversaledc-basedcombustionmodelforcompressionignitedenginesimulations[c]//saepaper.detroit,usa,2003,2003-01-1849.
|
[4] | zhengj,yangw,millerdl,eta1.askeletalchemicalkineticmodelforthehccicombustionprocess[c]//saepaper.detroit,usa,2002,2002-01-0423.
|
[5] | turanyit.reactionrateanalysisofcomplexkineticsystems[j].internationaljournalchemicalkinetics,1989,21(2):83-99.
|
[6] | nehsem,warnatzj,chevalierc.kineticmodelingoftheoxidationoflargealiphatichydrocarbons[c]//twenty-sixthsymposium(international)oncombustion.pittsburgh:thecombustioninstitute,1996:773-780.
|
[7] | budaf,bounaceurr,warthv,et.al.progresstowardaunifieddetailedkineticmodelfortheautoignitionofalkanesfromc4toc10between600kand1200k[j].combustionandflame,2005,142(1/2):170-186.
|
[8] | patela,kongsc,reitzrd.developmentandvalidationofreducedreactionmechanismforhccienginesimulation[c]//saepaper.detroit,usa,2004,2004-01-0558.
|
[9] | tanakas,ayalaf,keckjc.areducedchemicalkineticmodelforhccicombustionofprimaryreferencefuelsinarapidcompressionmachine[j].combustionandflame,2003,133(4):467-481.
|
[10] | 黄豪中,苏万华.一个新的用于hcci发动机燃烧研究的正庚烷化学反应动力学简化模型[j].内燃机学报,2005,23(1):42-51.huanghaozhong,suwanhua.anewreducedchemicalkineticmodelofn-heptanecombustionforhccienginesimulations[j].transactionsofcsice,2005,23(1):42-51(inchinese).
|
[11] | ciezkihk,adomeitg.shock-tubeinvestigationofself-ignitionofn-heptane-airmixturesunderenginerelevantconditions[j].combustionandflame,1993,93(4):421-433.
|
Full-Text