正癸烷的中低温着火特性  

n-Decane Autoignition Characteristics Under Low-to-Intermediate Temperature

作　　者：于亮[1] 孙书洲 陶文操 吕兴才[1] Yu Liang;Sun Shuzhou;Tao Wencao;Lü Xingcai(Key Laboratory for Power Machinery and Engineering of Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学动力机械与工程教育部重点实验室,上海200240

出　　处：《燃烧科学与技术》2017年第4期325-330,共6页Journal of Combustion Science and Technology

基　　金：国家杰出青年基金资助项目(51425602);国家自然科学基金重大研究计划重点项目(91641202)

摘　　要：在一台快速压缩机上进行了正癸烷在当量比0.46~1.50、压力0.7~1.5,MPa、温度范围600~750,K条件下的中低温着火特性研究.结果表明,正癸烷具有明显的两阶段着火特性;正癸烷着火延迟均随着温度、压力的升高而减小;不同当量比和氧气体积分数条件下的研究表明,正癸烷低温阶段着火延迟更依赖于燃料体积分数而对氧体积分数不敏感.采用两个正癸烷机理进行了模拟研究并与实验结果进行了对比,并通过敏感性分析研究了特定基元反应在控制正癸烷着火过程中的作用.This paper presents the ignition delay data for n-decane with a heated rapid compression machine at theequivalence ratio ranging from0.46to1.50,the compressed pressure corresponding to0.7-1.5,MPa,and thecompressed temperature varying from600,K to750,K.The experimental results show that n-decane exhibits obvioustwo-stage ignition characteristics,and the ignition delay time drops with the increase of either the compressedpressure or the compressed temperature.The ignition delay time is more sensitive to the change of fuel concentrationbut is relatively independent with oxygen percentage under low-to-intermediate temperature conditions.Besides,the performance of two n-dedane mechanisms is estimated by comparing the modeling result with the experimentaldata.Sensitivity analysis is then conducted to understand the role of specific reactions in controlling ndecaneautoignition.

关 键 词：正癸烷 着火延迟 快速压缩机 两阶段着火 化学动力学模型 

分 类 号：TK407.9[动力工程及工程热物理—动力机械及工程]