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所属单位：能源与动力学院

发表刊物：APPLIED ENERGY

关键字：Trapped vortex combustor Combustion efficiency Ignition Lean blowout Atomizer

摘要：A novel hybrid-atomizer, combining the spray characteristics of pressure-swirl, airblast and fan atomizers, was designed and adopted for cavity fueling in a trapped vortex combustor (TVC). Furthermore, comparison experiments were conducted under atmospheric pressure to investigate the combustion characteristics of the combustor fueled using the novel hybrid atomizer and a simplex pressure-swirl atomizer. The discrepancies were directly explored in terms of ignition, lean blowout (LBO) limit, and combustion efficiency. The results indicate that the novel hybrid atomizer achieves significant advantages in terms of the combustion characteristics when compared to the simplex pressure-swirl atomizer. The outer-cavity ignition FAR achieved by the novel hybrid atomizer is 50% lower than pressure-swirl atomizer at Mach 0.25 and 0.29, with an inlet temperature of 373 K. In addition, the LBO limits acquired by the novel hybrid atomizer are lower than those of the pressure-swirl atomizer within the full range of operating conditions. Furthermore, a higher combustion efficiency is achieved by the novel hybrid atomizer compared to the pressure-swirl atomizer under most operating regimes.

ISSN号：0306-2619

是否译文：否

发表时间：2018-04-15

合写作者：Li, Mingyu,Zhao, Yuling,金义,Yao, Kanghong,Ge, Zhenghao

通讯作者：何小民