燃气轮机环形燃烧室内燃烧流动的数值模拟

对一个复杂的GE—F101型工业燃气轮机环形燃烧室，采用Reynolds应力湍流模型(RSM)、EBU—Arrhenius湍流燃烧模型和六通量热辐射模型描述其燃烧流动，应用FLUENT软件进行了三维化学反应流场的数值模拟研究。研究结果表明：旋流和燃料进口射流对燃烧室流内温度和流场分布有着重要的影响；利用数值手段得到燃烧室出口的温度分布以判断其能否满足透平叶片进口温度的要求是可行的；燃烧室工作压强对出口的NO分布有着重要影响。在燃用气体燃料时，燃气轮机的NO排放主要来自于热NO，瞬时NO只占很小一部分。图11参6

Numerical Simulation of Three-Dimensional Combustion Flow in a Gas Turbine Annular Combustor

Three-dimensional reactive flow in a complex annular combustor of GE-F101 gas turbine was studied numerically using the zonal structured grids and FLUENT software. The RSM Reynolds-stress turbulence model. The EBU-Arrhenius turbulent combustion model, and six-flux heat radiation model were applied to predict the real combustion flow in the combustor. The numerical results indicate: the swirl flow and fuel jet condition at combustor inlet affect strongly the flow field and temperature distribution in the combustor; the exit temperature distribution by numerical method can be applied to estimate the combustor exit temperature to satisfied turbine request; the influences of pressure on combustion flows and NO concentration in the outflow is important; the thermal NO is crucial part of the gas turbine NO emission as the prompt NO is small part of the NO emission. Figs 11 and refs 6.