基于RANS求解的火焰面/反应进度变量湍流燃烧模型研究  

Study of RANS based flamelet/progress variable turbulent combustion model

作　　者：武文[1] 黄威[1] 赵平辉[1] 叶桃红[1] 

机构地区：[1]中国科学技术大学热科学和能源工程系,安徽合肥230027

出　　处：《中国科学技术大学学报》2010年第10期1016-1022,共7页JUSTC

基　　金：国家自然科学基金(50776085)资助

摘　　要：通过求解稳态一维拉伸层流扩散火焰面方程,得到混合物分数及反应进度Z-C双标量建表的层流火焰面数据库,并结合混合物分数满足β分布及一阶近似的反应进度变量条件概率密度分布,建立了湍流火焰面平均值数据库.通过将双参数火焰面模型的查表和求解过程与OpenFOAM计算平台相结合,发展了基于RANS方法的双参数湍流燃烧火焰面模型及数值计算求解器ZCFoam.对轴对称湍流射流Sandia D火焰的模拟表明,计算给出的温度分布、主要组分的分布等与实验值吻合较好.Laminar flamelet library was built up with steady state laminar stretched diffusion flames,indexed by the mixture fraction-progress variable.Then theβPDF of mixture fraction and first-order conditional PDF of the progress variable were employed to generate the mean turbulent flamelet library.By adding the library looking up and solving sections to OpenFOAM,a turbulent combustion solver named ZCFoam was developed based on RANS.A typical turbulent methane/air partially premixed jet flame was studied.The computational results indicate that the FPV approach could satisfactorily predict the flame structure,temperature and species＇concentration fields.

关 键 词：湍流扩散燃烧 火焰面模型 反应进度变量 OPENFOAM 数值模拟 

分 类 号：TK16[动力工程及工程热物理—热能工程]