IMECH-IR  > 高温气体动力学国家重点实验室
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)
Source PublicationASPACC 2015 - 10th Asia-Pacific Conference on Combustion
2015
Conference Name10th Asia-Pacific Conference on Combustion, ASPACC 2015
Conference DateJuly 19, 2015 - July 22, 2015
Conference PlaceBeijing, China
Abstract

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.

KeywordAxisymmetric Jet Flow Parameters Linear Frequency Response Mixing Enhancement Periodic Excitations Supersonic Circular Jet Supersonic Combustion Supersonic Jets
DepartmentLHD高超声速推进技术
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60167
Collection高温气体动力学国家重点实验室
Corresponding AuthorZhang, Peng (pengzhang.zhang@polyu.edu.hk)
Recommended Citation
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],2015.
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