摘要
对甲烷-空气的钝体燃烧进行了数值模拟,考虑了流体的湍流流动和扩散火焰燃烧的相互作用.模拟分别采用化学平衡模型和GRI-Mech 3.0反应机理的非预混燃烧稳定层流小火焰模型.通过与文献实验数据的比较,分析了上述两种模型的模拟结果和Mobini等人的条件矩平衡封闭模型的模拟结果的准确性.研究表明,上述3种燃烧模型的计算结果与实验结果均存在不同程度的误差,说明现有的燃烧模型尚需进一步完善.
Bluff-body combustion of methane and air was numerically investigated, taking into ac- count the interaction between turbulent fluctuation and flame diffusion. The equilibrium flame mod- el and the steady flamelet model with GRI-Mech 3.0 were chosen to evaluate the validity of com- bustion models. Numerical results of the above two models, together with those of the conditional momentum closure modeling conducted by Mobini et al, were compared with some published exper- imental data. Deviations from the experimental results were found for each of the three modeling methods. Obviously, it needs to work further to improve the existing combustion models.
出处
《上海理工大学学报》
CAS
北大核心
2009年第5期483-488,共6页
Journal of University of Shanghai For Science and Technology
基金
上海市浦江人才计划资助项目(07pj14072)
上海市重点学科建设资助项目(J50501)
关键词
钝体
非预混燃烧模型
层流小火焰模型
化学平衡模型
条件矩封闭模型
数值模拟
bluff-body
non-premixed combustion model
steady flamelet model
chemical equilibrium model
conditional moment closure model
numerical simulation
