IMECH-IR  > 高温气体动力学国家重点实验室
Comparative Study of Elliptic and Round Scramjet Combustors Fueled by RP-3
Yao W(姚卫); Yuan YM(袁越明); Li XP(李晓鹏); Wang J(王晶); Wu K(吴坤); Fan XJ(范学军)
Source PublicationJOURNAL OF PROPULSION AND POWER
2018
Pages772-786
Conference Name21st AIAA International Space Planes and Hypersonics Technologies Conference
Conference DateMAR 06-09, 2017
Conference PlaceXiamen, PEOPLES R CHINA
Abstract

To explore the combustion performance of nonrectangular supersonic combustors, the flow and combustion characteristics in the round and round-to-elliptic shape-transition scramjet combustors were compared, based on the measurements and the improved delayed detached-eddy simulation modelings. The global equivalence ratio was kept at 0.8, whereas two inlet Mach numbers of 2.5 and 3.0 were tested. To reduce the computational cost, four versions of skeletal mechanisms (respectively, 48 s/197 r, 39 s/153 r, 28 s/92 r, and 19 s/54 r) have been developed for China RP-3 kerosene; and the latest one was used. The predicted static pressure profiles along the streamwise direction were first validated against the measurements. Then, the aerodynamic fields were analyzed for the two combustors to compare their flow, mixing, and combustion performances. The three-dimensional wave structures inside the nonaxisymmetric elliptic combustor were revealed for the first time to show the influence of shape transition. Specifically, the time evolution of the flame structures was analyzed, and dominant modes were extracted by the aid of proper orthogonal decomposition.

WOS IDWOS:000430384400020
Funding OrganizationThis project was supported by training program of the Major Research Plan of the National Natural Science Foundation of China (grant no.91641110) and the National Natural Science Foundation of China (grant no.11502270). The authors are also grateful to National Supercomputing Center of Tianjin for providing computational resources.
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Indexed ByCPCI-S
Language英语
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/75547
Collection高温气体动力学国家重点实验室
空天飞行科技中心(筹)
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GB/T 7714
Yao W,Yuan YM,Li XP,et al. Comparative Study of Elliptic and Round Scramjet Combustors Fueled by RP-3[C],2018:772-786.
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