Simulation of premixed combustion with varying equivalence ratio in gas turbine combustor
Simulation of premixed combustion with varying equivalence ratio in gas turbine combustor
复制标题
燃气轮机燃烧室变当量比预混燃烧模拟
DOI：
10.2514/1.b35517
复制
发表时间：
2015
影响因子：
1.9
通讯作者：
K. Saitoh
中科院分区：
文献类型：
--
作者：
S. Ruan;N. Swaminathan;M. Isono;T. Saitoh;K. Saitoh
对复杂几何形状的燃气轮机燃烧室进行了雷诺平均的N-S数值模拟。湍流是用两方程方法模拟的。标量混合和燃烧采用基于火焰面的部分预混燃烧方法进行模拟。在这种方法中，描述标量混合和反应场及其统计相互作用的输运方程与标准守恒方程一起求解。使用测量值指定边界条件。计算得到的包括CO和NOx在内的各种标量的平均温度和干摩尔分数的空间变化与实测值吻合较好。将该燃烧模型的计算结果与燃气轮机燃烧计算中常用的涡耗散概念模型的计算结果进行了比较，结果表明部分预混燃烧模型的计算结果有较大改进。
Reynolds-averaged Navier–Stokes simulation of a gas turbine combustor with complex geometry is performed. The turbulence is modeled using a two-equation approach. The scalar mixing and combustion is modeled using a flamelet-based approach for partially premixed combustion. In this approach, transport equations to describe scalar mixing and reacting fields and their statistical interactions are solved along with standard conservation equations. The boundary conditions are specified using measured values. The computed spatial variations of averaged temperature and dry mole fractions of various scalars, including CO and NOx, compared quite well with measured values. The results of this combustion model are compared with the eddy-dissipation-concept model commonly used for gas turbine combustion calculation and this comparison showed that the results of partially premixed combustion model is improved considerably.