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本文在任意曲线坐标系下对旋流杯环形燃烧室冷态和两相燃烧全流程流场进行数值研究。采用RNG k-ε湍流模型,EBU-Arrhenius燃烧模型和六通量辐射模型模拟湍流燃烧过程;采用颗粒轨道模型模拟两相流动。为了验证数学模型与计算方法,本文还采用PIV测量燃烧室火焰筒内冷、热态流场,利用温度耙测量燃烧室出口温度径向分布,所得的计算值与试验数据符合较好,表明所用的各数学模型合理、计算方法可行,所得研究结果可为该类燃烧室的优化设计提供有用的依据。
In this paper, the numerical simulation of flow field in the whole process of cold state and two-phase combustion of a toroidal cup annular combustor under arbitrary curvilinear coordinate system is carried out. The RNG k-ε turbulence model, the EBU-Arrhenius combustion model and the six-flux radiation model were used to simulate the turbulent combustion process. The particle orbit model was used to simulate the two-phase flow. In order to verify the mathematical model and calculation method, PIV is also used to measure the cold and hot flow field in the flame tube of the combustion chamber. The radial distribution of the exit temperature of the combustion chamber is measured by the temperature rake. The calculated value is in good agreement with the experimental data, The mathematical models are reasonable and the calculation method is feasible. The results obtained can provide a useful basis for the optimization design of this kind of combustion chamber.