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综合考虑燃烧室对低污染和出口温度分布的需求,对中心分级的TAPS燃烧室流量分配进行了设计和燃烧数值模拟,该流量分配方案采用了不同燃油分级比例。计算结果表明:燃油分级比例对TAPS燃烧室宏观流场结构改变不大,改变3级旋流的流量可影响燃烧室局部当量比,同时能够减小高温区,改善出口温度分布品质,从而大幅降低NOX和CO排放。
Considering the combustion chamber’s requirement for low pollution and outlet temperature distribution, the numerical simulation of the TAPS combustion chamber flow distribution was carried out. The flow distribution scheme adopted different fuel classification ratios. The results show that the fuel fractionation has little effect on the structure of the macro-flow field in the TAPS combustion chamber. Changing the flow rate of the 3-stage swirling flow can affect the local equivalence ratio of the combustion chamber, reduce the high temperature region and improve the outlet temperature distribution quality, NOX and CO emissions.