IMECH-IR  > 高温气体动力学国家重点实验室
Influences of Domain Symmetry on Supersonic Combustion Modeling
Yao W(姚卫); Wu K(吴坤); Fan XJ(范学军)
Source PublicationJOURNAL OF PROPULSION AND POWER
2019-03-01
Volume35Issue:2Pages:451-465
ISSN0748-4658
Abstract

High-fidelity Improved Delayed Detached Eddy Simulation modeling is applied to examine the influence of the symmetry plane on the supersonic flow and combustion characteristics in a round-to-elliptic-transition scramjet combustor. A quarterly split domain and the full domain are modeled by using up to 0.14 billion cells and a third-order scale-selective discretization scheme. The combustion chemistry is described by the finite-rate partially stirred reactor model based on multicomponent diffusion and a skeletal kerosene mechanism with 19 species/53 reactions. Time-averaged pressure, temperature, Mach number, and heat release rate are compared to examine the influence of the symmetry assumption on the mean flow fields. The exchanges of mass, momentum, and energy across the symmetry planes are analyzed. Considerable increases in the combustion efficiency and total pressure loss occur when applying the full domain, although with the similar mixing efficiency. Turbulence spectrum analysis confirms the -8/3 power-law for supersonic flows, and the inertial subrange is found to be shorter in the quarter-domain modeling. A comparison of the Borghi's diagrams shows that the data points shift from the flamelet mode to the thin reaction zone mode when using the full domain, and at least 1/3 of them cannot be described by fast-chemistry combustion models.

DOI10.2514/1.B37227
Indexed BySCI ; EI
Language英语
WOS IDWOS:000458409700019
WOS KeywordLARGE-EDDY SIMULATION ; CENTRAL SCHEMES ; TURBULENCE ; IMPLEMENTATION ; FLAMES ; JETS ; LAWS ; FLOW ; GAS ; LES
WOS Research AreaEngineering, Aerospace
WOS SubjectEngineering
Funding OrganizationTraining Program of the Major Research Plan of National Natural Science Foundation of China [91641110] ; National Natural Science Foundation of China [11502270] ; LHD Innovative Foundation [LHD2018JS01]
Classification二类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78452
Collection高温气体动力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, Key Lab High Temp Gas Dynam, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yao W,Wu K,Fan XJ. Influences of Domain Symmetry on Supersonic Combustion Modeling[J]. JOURNAL OF PROPULSION AND POWER,2019,35(2):451-465.
APA Yao W,Wu K,&Fan XJ.(2019).Influences of Domain Symmetry on Supersonic Combustion Modeling.JOURNAL OF PROPULSION AND POWER,35(2),451-465.
MLA Yao W,et al."Influences of Domain Symmetry on Supersonic Combustion Modeling".JOURNAL OF PROPULSION AND POWER 35.2(2019):451-465.
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