Mixed uncertainty quantification and its application in upwind scheme for computational fluid dynamics (CFD)

doi:10.11883/1001-1455(2016)04-0509-07

科研成果详情

题名	Mixed uncertainty quantification and its application in upwind scheme for computational fluid dynamics (CFD)
作者	Liang，Xiao 1,2; Wang，Ruili 1
发表日期	2016-07-25
发表期刊	Baozha Yu Chongji/Explosion and Shock Waves
ISSN/eISSN	1001-1455
卷号	36 期号:4 页码:509-515
摘要	Both aleatory uncertainty and epistemic uncertainty exist in the initial and boundary conditions when we numerically solve the CFD with sharp discontinuity. In this paper, mixed uncertainty quantification approaches are developed to deal with this situation. Specifically, the outer level uncertainty is linked to epistemic uncertainties, and the inner uncertainty is linked to aleatory uncertainty. The non-intrusive polynomial chaos method is utilized to cope with the aleatory uncertainties, while the P-box theory is used to deal with the epistemic uncertainties, and the upwind scheme and Riemann solver are used to solve the deterministic system. We apply this method to the Sod problem in the CFD, and acquire preferable effect. This method evaluates the influence of input uncertainty such as density (aleatory uncertainty) and polytrophic exponent (epistemic uncertainty) on the output uncertainty, the efficiency of this method is also proved. This method is also helpful in evaluating the degree of confidence and validation of the result from modeling and simulation by other models.
关键词	Mechanics of explosion Mixed uncertainty quantification Modeling and simulation Non-intrusive polynomial chaos P-box
DOI	10.11883/1001-1455(2016)04-0509-07
URL	查看来源
语种	英语English
Scopus入藏号	2-s2.0-84982952529
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://repository.uic.edu.cn/handle/39GCC9TT/10739
专题	个人在本单位外知识产出
作者单位	1.Institute of Applied Physics and Computational Mathematics,Beijing,100094,China 2.College of Mathematics,Shandong University of Science and Technology,Qingdao,266590,China
推荐引用方式 GB/T 7714	Liang，Xiao,Wang，Ruili. Mixed uncertainty quantification and its application in upwind scheme for computational fluid dynamics (CFD)[J]. Baozha Yu Chongji/Explosion and Shock Waves, 2016, 36(4): 509-515.
APA	Liang，Xiao, & Wang，Ruili. (2016). Mixed uncertainty quantification and its application in upwind scheme for computational fluid dynamics (CFD). Baozha Yu Chongji/Explosion and Shock Waves, 36(4), 509-515.
MLA	Liang，Xiao,et al."Mixed uncertainty quantification and its application in upwind scheme for computational fluid dynamics (CFD)". Baozha Yu Chongji/Explosion and Shock Waves 36.4(2016): 509-515.