三维紊流燃烧室流场的数值计算

运用圆柱从标系对单管回流燃烧室进行了数值模拟。紊流粘度模型采用k-ε双方程紊流模型来估算紊流粘度，燃烧模型采用EBU旋涡破碎燃烧模型来估算化学反应速度，热辐射模型采用比较简单的DTRM模型来计算热辐射量。计算结果能比较准确地反映燃烧室流场的流动状态，同时也为复杂形状的燃烧室造型提供了方法。

Numerical Calculation of the Three-dimensional Turbulent Flow Field of a Gas Turbine Combustor

By the use of a cylindrical coordinate system a numerical simulation was conducted of a single-tube return-flow combustor flow-field. A turbulent flow viscosity model was employed to evaluate the turbulent flow viscosity with the help of a k -ε dual equation turbulent flow model. A combustion model was utilized to assess chemical reaction speed with the help of a EBU (eddy-break-up) vortex breakage combustion model. Thermal radiation magnitude was calculated by using a thermal radiation model with the help of a relatively simple DTR (discrete transfer radiation) model. The results of the calculation have been found to reflect quite accurately the flow condition of the combustor flow field. Moreover, these results have also played a beneficial role in devising a method for the modeling of combustors with a complicated shape