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The dual information preserving method for stiff reacting flows
Liu, Li; Shen YQ(申义庆); Liu, Shengping; Yu, Ming; Shen, YQ (reprint author), Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China.
2017-11-03
发表期刊COMPUTERS & FLUIDS
卷号157页码:253-275
ISSN0045-7930
摘要In this paper, we construct a new numerical method to solve the reactive Euler equations to cure the numerical stiffness problem. The species mass equations are first decoupled from the reactive Euler equations, and then they are further fractionated into the convection step and the reaction step. In the convection step, by introducing two kinds of Lagrangian points (cell-point and particle-point), a dual information preserving (DIP) method is proposed to resolve the convection characteristics. In this new method, the information (including the transport value and the relative coordinates to the center of the current cell) of the cell-point and that of the particle-point are updated according to the velocity field. The information of the cell-point in a cell can effectively restrict the incorrect reaction activation caused by the numerical dissipation, while the information of the particle-point can help to preserve the sharp shock front once the strong shock waves are formed. Hence, by using the DIP method, the spurious numerical propagation phenomenon in stiff reacting flows is effectively eliminated. In addition, a numerical perturbation method is also developed to solve the fractional reaction step (ODE equation) to improve the stability and efficiency. A series of numerical examples are presented to validate the accuracy and robustness of the new method. (C) 2017 Elsevier Ltd. All rights reserved.
关键词Stiff Reacting Flow Dual Information Preserving Method Numerical Perturbation Method Shock-capturing Scheme
DOI10.1016/j.compfluid.2017.09.001
收录类别SCI ; EI
语种英语
WOS记录号WOS:000413380300018
项目资助者This research work was supported by NSAF U1530145, 2016YFA0401200, NSFC No. 11272325 and 11272324.
课题组名称LHD气动布局优化与计算方法
论文分区二类/Q1
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/60935
专题高温气体动力学国家重点实验室
通讯作者Shen, YQ (reprint author), Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Liu, Li,Shen YQ,Liu, Shengping,et al. The dual information preserving method for stiff reacting flows[J]. COMPUTERS & FLUIDS,2017,157:253-275.
APA Liu, Li,申义庆,Liu, Shengping,Yu, Ming,&Shen, YQ .(2017).The dual information preserving method for stiff reacting flows.COMPUTERS & FLUIDS,157,253-275.
MLA Liu, Li,et al."The dual information preserving method for stiff reacting flows".COMPUTERS & FLUIDS 157(2017):253-275.
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