注蒸汽燃气轮机燃烧室内部流场特性的三维数值模拟

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

Three-Dimensional Simulation of Steam Injected Gas Turbine Combustor Inner Flowfield Characteristics

A humid combustion numerical model which is suitable for steam injected gas turbine(STIG) combustor inner flowfield simulation was introduced and the numerical method and some speical treatments were illuminated subsequently. The validity of the model and the computation program was checked according to some experimental results reported in specific documents. Based on this, some numerical study for the inner flowfield characteristics of a practical experimental STIG combustor was carried out. It is showed that three dimensional simulation can reflect the distributation characteristics of kinds of variables, especially the steam mass distribution more practicaly. The steam injected into the STIG combustor from the cylinder wall works like the air injection of combustor, which makes the central reflux zone and high temperature zone restricted in the axial direction. The steam mass distribution is influenced by factors such as the entrance air rotation direction and the different spatial location.