采用火焰面/反应进度变量方法模拟湍流燃烧

在自主开发的软件平台上添加了火焰面/反应进度变量方法，选取了两种反应进度变量分别对甲烷/空气的同轴射流燃烧室进行了数值模拟.将计算结果与稳态火焰面模型、文献参考值以及实验值进行了对比研究，结果表明:采用火焰面/反应进度变量方法能捕捉到稳态火焰面模型所不能预测到的火焰抬举等非稳态现象，得到的结果与文献参考值以及实验值出入很小，能准确反应真实的燃烧过程；另外不同反应进度变量的定义对计算结果有较大的影响，采用火焰面/反应进度变量方法对主要中间产物一氧化碳的预测比文献参考值更好，更接近于实验值. 

Flamelet/progress variable approach for turbulent combustion

Adding flamelet/progress variable approach to computation platform developed by ourselves, two kinds of progress variable were adopted to simulate methane/air coaxial jet combustor. Comparing the results with each other and also with steady flamelet model, literature reference and experiment result, it is indicated that the results of flamelet/progress variable approaches can compute unsteady phenomenon in combustion, such as lifted flame which can not be observed in steady flamelet model, and agree reasonably well with the literature reference and experiment result, namely, they can reflect the actual process of combustion accurately; at the same time it is learnt that different definitions of progress variables lead to different results; it is proved that flamelet/progress variable approaches do better in simulating main auxiliary production carbon monoxide, and are closer to experiment result.