An energy integral method analysis of preferred modes and the spreading rates of supersonic circular jets | |
Yu DH; Gu HB(顾洪斌); Zhang P; Zhang, Peng (pengzhang.zhang@polyu.edu.hk) | |
2015 | |
会议日期 | July 19, 2015 - July 22, 2015 |
会议地点 | Beijing, China |
关键词 | Axisymmetric Jet Flow Parameters Linear Frequency Response Mixing Enhancement Periodic Excitations Supersonic Circular Jet Supersonic Combustion Supersonic Jets |
英文摘要 | Jet spreading plays a crucial role in process of fuel mixing in supersonic combustion. The jet preferred mode signifies the maximum spreading rate of the shear layer of jets under periodic excitation. In this paper, linear frequency response of compressible axisymmetric jets was analyzed based on an energy integral method. The jet preferred mode was numerically identified, and its dependence on various flow parameters were analyzed. The most interesting discovery of the analysis is that the jet preferred frequency, which is denoted by Strouhal number Stp= fpD/u0, is found to vary in non-monotonic manner with the jet exit Mach number M0. The implication of the result for mixing enhancement of supersonic jets with ambient fluids was also discussed. |
会议录 | ASPACC 2015 - 10th Asia-Pacific Conference on Combustion |
语种 | 英语 |
内容类型 | 会议论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/60167] |
专题 | 力学研究所_高温气体动力学国家重点实验室 |
通讯作者 | Zhang, Peng (pengzhang.zhang@polyu.edu.hk) |
推荐引用方式 GB/T 7714 | Yu DH,Gu HB,Zhang P,et al. An energy integral method analysis of preferred modes and the spreading rates of supersonic circular jets[C]. 见:. Beijing, China. July 19, 2015 - July 22, 2015. |
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