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题名: Multiple-relaxation-time lattice Boltzmann kinetic model for combustion
作者: Xu, AG;  Lin, CD;  Zhang, GC;  Li, YJ
刊名: PHYSICAL REVIEW E
出版日期: 2015
卷号: 91, 期号:4, 页码:43306
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevE.91.043306
通讯作者: Xu, AG (reprint author), Inst Appl Phys & Computat Math, Natl Key Lab Computat Phys, POB 8009-26, Beijing 100088, Peoples R China.
文章类型: Article
英文摘要: To probe both the hydrodynamic nonequilibrium (HNE) and thermodynamic nonequilibrium (TNE) in the combustion process, a two-dimensional multiple-relaxation-time (MRT) version of lattice Boltzmann kinetic model (LBKM) for combustion phenomena is presented. The chemical energy released in the progress of combustion is dynamically coupled into the system by adding a chemical term to the LB kinetic equation. Aside from describing the evolutions of the conserved quantities, the density, momentum, and energy, which are what the Navier-Stokes model describes, the MRT-LBKM presents also a coarse-grained description on the evolutions of some nonconserved quantities. The current model works for both subsonic and supersonic flows with or without chemical reaction. In this model, both the specific-heat ratio and the Prandtl number are flexible, the TNE effects are naturally presented in each simulation step. The model is verified and validated via well-known benchmark tests. As an initial application, various nonequilibrium behaviors, including the complex interplays between various HNEs, between various TNEs, and between the HNE and TNE, around the detonation wave in the unsteady and steady one-dimensional detonation processes are preliminarily probed. It is found that the system viscosity (or heat conductivity) decreases the local TNE, but increases the global TNE around the detonation wave, that even locally, the system viscosity (or heat conductivity) results in two kinds of competing trends, to increase and to decrease the TNE effects. The physical reason is that the viscosity (or heat conductivity) takes part in both the thermodynamic and hydrodynamic responses.
类目[WOS]: Physics, Fluids & Plasmas ;  Physics, Mathematical
关键词[WOS]: MACH NUMBER COMBUSTION ;  ENTROPY GENERATION ;  COMPRESSIBLE FLOWS ;  DIFFUSION FLAME ;  PREMIXED HYDROGEN ;  SIMULATION ;  AIR ;  PROPAGATION ;  DETONATION ;  EQUATION
收录类别: SCI
项目资助者: Science Foundations of National Key Laboratory of Computational Physics, National Natural Science Foundation of China [11475028, 11202003] ;  opening project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology) [KFJJ14-1M] ;  Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF151CJ1] ;  National Natural Science Foundation of China [11074300, 41472130] ;  National Basic Research Program of China [2013CBA01504]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21022
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Xu, AG,Lin, CD,Zhang, GC,et al. Multiple-relaxation-time lattice Boltzmann kinetic model for combustion[J]. PHYSICAL REVIEW E,2015,91(4):43306.
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