燃烧器燃烧流场与污染物排放的数值模拟  

Numerical simulation of combustion flow field and NO_x emission in burner

作　　者：刘明明[1] 郑洪涛[1] 

机构地区：[1]哈尔滨工程大学动力与能源工程学院,哈尔滨150001

出　　处：《燃气轮机技术》2008年第2期41-46,共6页Gas Turbine Technology

摘　　要：针对一种新型燃烧器,利用FLUENT软件,对其内部三维燃烧流场进行了数值模拟。计算采用RNGk-ε双方程湍流模型、PDF燃烧模型以及离散坐标辐射传热模型,液体燃料采用颗粒群轨道模型,模拟了不同过量空气系数和不同负荷工况下的燃烧流场,并对NOx排放进行了预测。根据所得到的模拟结果分析了影响燃烧的因素,为此新型燃烧器的研制提供了理论指导。Combined with a new- style burner, using commercial software FLUENT, a three - dimensional numerical simulation of combustion flow field is applied to the burner. Using RNGk -ε turbulence model, discrete ordinates radiation model, PDF combustion model and diseete phase modeling for liquid fuel, the combustion characteristics were studied under various kinds of situation. On the basis of simulation results, we compared the effect of excessive air coefficient and working load on the combustion process, at the same time forecasted NO, emission. The results can be used to study and develop this new- style burner.

关 键 词：燃烧器 数值模拟 湍流 NOX排放 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]