Large eddy simulation of hydrogen/air scramjet combustion using tabulated thermo-chemistry approach

被引:59
作者
Cao Changmin [1 ]
Ye Taohong [1 ]
Zhao Majie [1 ]
机构
[1] Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230027, Peoples R China
基金
中国国家自然科学基金;
关键词
Large eddy simulation (LES); Presumed probability density function (PDF); Scramjet; Tabulated thermo-chemistry; Turbulent combustion model; TURBULENT COMBUSTION; SUPERSONIC COMBUSTION; FLAMELET MODEL; EXTINCTION; REIGNITION; PREDICTION; IGNITION; LES; AIR;
D O I
10.1016/j.cja.2015.08.008
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
Large eddy simulations (LES) have been performed to investigate the flow and combustion fields in the scramjet of the German Aerospace Center (DLR). Turbulent combustion is modeled by the tabulated thermo-chemistry approach in combination with the presumed probability density function (PDF). A beta-function is used to model the distribution of the mixture fraction, while two different PDFs, d-function (Model I) and beta-function (Model II), are applied to model the reaction progress. Temperature is obtained by solving filtered energy transport equation and the reaction rate of the progress variable is rescaled by pressure to consider the effects of compressibility. The adaptive mesh refinement (AMR) technique is used to properly capture shock waves, boundary layers, shear layers and flame structures. Statistical results of temperature and velocity predicted by Model II show better accuracy than that predicted by Model I. The results of scatter points and mixture fraction-conditional variables indicate the significant differences between Model I and Model II. It is concluded that second moment information in the presumed PDF of the reaction progress is very important in the simulation of supersonic combustion. It is also found that an unstable flame with extinction and ignition develops in the shear layers of bluff body and a fuel-rich partially premixed flame stabilizes in the central recirculation bubble. (C) 2015 The Authors. Production and hosting by Elsevier Ltd. on behalf of CSAA & BUAA.
引用
收藏
页码:1316 / 1327
页数:12
相关论文
共 46 条
[31]   Progress-variable approach for large-eddy simulation of non-premixed turbulent combustion [J].
Pierce, CD ;
Moin, P .
JOURNAL OF FLUID MECHANICS, 2004, 504 :73-97
[32]   PDF METHODS FOR TURBULENT REACTIVE FLOWS [J].
POPE, SB .
PROGRESS IN ENERGY AND COMBUSTION SCIENCE, 1985, 11 (02) :119-192
[33]  
Potturi A, 2012, AIAA20120611
[34]   Numerical simulation of turbulent combustion: Scientific challenges [J].
Ren ZhuYin ;
Lu Zhen ;
Hou LingYun ;
Lu LiuYan .
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2014, 57 (08) :1495-1503
[35]   Revisited flamelet model for nonpremixed combustion in supersonic turbulent flows [J].
Sabel'nikov, V ;
Deshaies, B ;
Da Silva, LFF .
COMBUSTION AND FLAME, 1998, 114 (3-4) :577-584
[36]  
Saghafian A, 2011, P 17 AIAA INT SPAC P
[37]   Analysis on capabilities of density-based solvers within OpenFOAM to distinguish aerothermal variables in diffusion boundary layer [J].
Shen Chun ;
Sun Fengxian ;
Xia Xinlin .
CHINESE JOURNAL OF AERONAUTICS, 2013, 26 (06) :1370-1379
[38]   Extinction and reignition in a diffusion flame:: a direct numerical simulation study [J].
Sripakagorn, P ;
Mitarai, S ;
Kosály, G ;
Pitsch, H .
JOURNAL OF FLUID MECHANICS, 2004, 518 :231-259
[39]  
Urzay J., 2012, STOCHASTIC FLAMELET
[40]   Modeling non-premixed laminar co-flow flames using flamelet-generated manifolds [J].
Verhoeven, L. M. ;
Ramaekers, W. J. S. ;
van Oijen, J. A. ;
de Goey, L. P. H. .
COMBUSTION AND FLAME, 2012, 159 (01) :230-241