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介绍了适于注蒸汽燃气轮机 ( STIG)燃烧室流场模拟的大湿度燃烧计算模型 ,对三维流场计算的数值方法及特殊处理进行了说明 ,并采用有关文献中的实验数据对燃烧计算程序进行校验 ,最后对某实验用注蒸汽燃烧室的内部流场进行数值模拟 .计算结果表明 ,文中采用的数学模型及计算程序是可信的 ,大湿度燃烧室流场的三维模拟可更贴近实际地描述燃烧室内部各物理量 ,尤其是水蒸汽质量分数的分布情况 .壁面射入的蒸汽流使中心回流区及高温区的轴向分布受到限制 ,起到了类似于掺混空气射流的作用 .蒸汽质量分数的分布特性受到进口空气旋流方向及空间位置的影响
The large-volume combustion calculation model suitable for the flow field simulation of a steam injection gas turbine (STIG) combustor is introduced. The numerical method and special treatment for calculating the three-dimensional flow field are described. The combustion calculation program is carried out by using the experimental data in the literature Finally, the numerical simulation of the internal flow field of a steam injection chamber for a certain experiment is carried out.The calculation results show that the mathematical model and the calculation program are credible, and the 3D simulation of the flow field in a large humidity chamber can be more realistic Describes the distribution of the physical quantities inside the combustion chamber, especially the mass fraction of water vapor.The wall-surface injection of steam makes the axial distribution of the central recirculation zone and the high temperature zone limited and plays a role similar to the jet of mixed air. The distribution of mass fraction is affected by the swirling direction and spatial position of the inlet air