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假设火焰辐射区域为光学薄,将辐射计算的代数模型嵌入到条件矩模型中(CMC(rad)),对甲烷 空气射流扩散值班火焰进行了模拟。并将此模型的模拟结果分别与实验和未考虑辐射热损的条件矩模型(CMC(ad))的结果进行了比较。结果表明采用代数模型计算辐射热损失是合适的,且考虑辐射的条件矩模型对温度场和NO的浓度的模拟结果相比未考虑辐射热损条件矩模型的模拟结果,与实验结果符合得要好。
Assuming that the flame radiation area is optical thin, the algebraic model of radiation calculation is embedded into the conditional moment model (CMC (rad)), and the flame of methane air jet diffusion is simulated. The simulation results of this model were compared with the results of the model of the conditional moment (CMC (ad)), which were not affected by radiative heat loss. The results show that it is suitable to calculate the radiative heat loss by algebraic model, and the simulation results of the model considering the radiative condition are better than the simulation results of the model of radiant heat loss compared with the simulation results of temperature field and NO concentration .