为数值预测燃气轮机燃烧室生成的快速型NO含量，分别采用完全NO机理GRI3.0（其中快速型NO机理为HCN子机理）及GRI3.0_modified（其中快速型NO机理为NCN子机理），通过计算流体力学（CFD）软件计算贫预混旋流火焰下的总NO生成，并将出口NO浓度的计算结果与实验值进行比较；然后分别采用加法和减法计算了HCN子机理及NCN子机理的快速型NO的生成。结果表明：GRI3.0及GRI3.0_modified均对出口NO浓度做出了准确的预测，GRI3.0_modified的准确度比GRI3.0高7%，这归功于后者的NCN子机理对前者的HCN子机理的替换；加法与减法的计算结果相互对应，验证了这两种方法计算快速型NO的准确性；NCN子机理的快速型NO生成速率高于HCN子机理，前者的NO出口浓度比后者高1倍，分别占各自完全NO机理生成的总NO出口浓度的17%（NCN）及10%（HCN）

In order to numerically predict prompt NO formation in gas turbine combustor,firstly,two overall NO mechanisms,GRI3.0 with prompt NO formation mechanism of HCN sub_mechanism,and GRI3.0_modified with the prompt NO formation mechanism of NCN sub_mechanism,were employed to calculate total NO formation under lean premixed swirl flame condition using CFD.Simulation results of NO concentrations at outlet were compared to experimental results.Then additional technique and subtraction technique were used to calculate prompt NO formation from HCN sub_mechanism and NCN sub_mechanism,respectively.It turned out that,NO concentrations at outlet were predicted accurately by GRI3.0 and GRI3.0_modified,the accuracy of GRI3.0_modified is higher by 7% than GRI3.0,which is due to that HCN sub_mechanism is replaced by NCN sub_mechanism.The calculation results using addition technique and subtraction technique are verified by each other,which indicate it is accurate to using these two methods to calculate prompt NO formation.The prompt NO formation rate from NCN sub_mechanism is higher than that from HCN sub_mechanism,and the NO concentrations at outlet from the former is double that of the latter,17%（NCN） and 10% （HCN）of each total NO.

TK472

北京市自然科学基金面上项目(3162030)