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所属单位：能源与动力学院

发表刊物：AEROSPACE SCIENCE AND TECHNOLOGY

关键字：Strut length Flow field Combustion performance Trapped vortex combustor

摘要：Experimental studies with four different strut setups are conducted to investigate the effect of strut length on combustion performance of a trapped vortex combustor (TVC). The experimental results indicate that ignition, lean blowout (LBO) and combustion efficiency depend to a great extent upon the length of the strut. The longer struts show prominent advantages in terms of ignition and LBO, whereas the shorter ones perform rather poorly. Interestingly, the combustion efficiency achieved by the shorter struts is higher than the longer ones. Furthermore, RANS based simulations are also performed to explain the experimental results. From the detailed numerical simulations, it can be inferred that the poor ignition performance and LBO limits of the shorter struts are mainly caused by the great amount of mainstream air entrained into the cavity. And the higher combustion efficiency achieved by the shorter struts is mainly attributed to much more wake regions formed behind the struts. (C) 2018 Elsevier Masson SAS. All rights reserved.

ISSN号：1270-9638

是否译文：否

发表时间：2018-05-01

合写作者：Li, Mingyu,Zhao, Yuling,金义,Ge, Zhenghao,Huang, Weidong

通讯作者：何小民