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在任意曲线坐标系下对包括扩压器和火焰筒在内的环形燃烧室三维两相反应流进行了数值模拟。燃烧室性能采用多维经验分析法估算所用的数学模型有 κ-ε,紊流模型 ,EBU -Arrhenius紊流燃烧室模型 ,六通量热辐射模型以及颗粒群轨道模型。在非交错网格体系下 ,气相采用 SIMPLE算法和液相采用 PSIC算法求解 ,通过两种工况和三种扩压器进口速度分布计算表明 ,所得的流场各气流参数分布和燃烧室性能较合理 ,本文所建立的程序可为燃烧室优化设计和研制提供有用数据。
The three-dimensional two-phase flow in a toroidal combustion chamber, including the diffuser and the flame tube, was numerically simulated with arbitrary curvilinear coordinate system. The combustion chamber performance was estimated by multidimensional empirical analysis. The mathematical models used were κ-ε, turbulence model, EBU-Arrhenius turbulent combustion chamber model, six-flux heat radiation model and particle swarm orbit model. Under the non-staggered grid system, the SIMPLE algorithm and the PSIC algorithm were used to solve the gas phase. The calculation of the inlet velocity distribution of the two diffusers showed that the distribution of the gas flow parameters and the performance of the combustion chamber Reasonable, the procedure established in this paper can provide useful data for the combustion chamber optimization design and development.