微细尺度下液体乙醇层流扩散燃烧的特性仿真  

Simulation of Micro Scale Liquid Ethanol Laminar Flow Diffusion Combustion Characteristic

作　　者：徐涛[1,2] 杨泽亮[1] 甘云华[1] 杨帅[1] 

机构地区：[1]华南理工大学电力学院,广东广州510640 [2]广州航海高等专科学校轮机系,广东广州510725

出　　处：《计算机仿真》2011年第3期297-301,共5页Computer Simulation

基　　金：国家自然科学基金资助项目(50806022);中央高校基本科研业务费专项资金资助

摘　　要：在微尺度燃烧器特性的研究中,针对目前对微细尺度液体燃料层流扩散燃烧特性研究,为了克服实验研究过程中微火焰温度的测量限制,通过建模进行仿真分析,外加电场可提高火焰最高温度,正向电场能拉伸火焰高度,而反向电场压缩火焰高度;流量较少时,无电场火焰高度最高;随着流量增加,外加电场火焰高度最高;相同流量下,正向电场火焰高度较反向电场高。以上是采用Fluent6.3软件进行仿真,结果表明,火燃结构与实验值吻合良好,仿真方法对高效微型燃烧器研制具有重要指导意义。Current study is not sufficient on micro scale liquid ethanol laminar flow diffusion combustion characteristic,in order to overcome the limit of micro flame temperature measurement in experimental process,simulation study method was proposed with Fluent6.3 software in this article.The simulation results showed that the applied electric field could enhance the maximum flame temperature,the positive electric field could stretch the flame height,the reverse electric field could condense the flame height when the ethanol flow rate was 2.7ml/h.When ethanol flow rate was low,the flame height of the non-electric field was higher than the applied electric field,with the increasing of ethanol flow rate,the flame height of the applied electric field was the highest,and the flame height of the positive electric field was significantly higher than the reverse electric field at the same volume flow.Proved by the experiment,the simulation values of flame structure and temperature were in good agreement with experimental values,and simulation method for effective micro combustor research had important guiding significance.

关 键 词：微尺度 层流扩散 电场 仿真 

分 类 号：TQ171[化学工程—玻璃工业]