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Numerical Study of Flame Propagation Morphology for Deflagration in the Pipeline Using Proper Orthogonal Decomposition
Joint Authors
Wu, Weimin
Yao, Jianyao
Liu, Jingcheng
Wu, Zejun
Liu, Jiawen
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-29
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
A multilevel independent spatial modal analysis of flame propagation characteristics of a deflagration in a specific pipeline was performed using the proper orthogonal decomposition (POD) method, in order to research the evolution process of the explosion which is closely related to flame propagation speed and front rupture pressure.
The CFD results indicated that the full-order calculation results well agreed with the normal combustion propagation characteristics of premixed methane-air for the flame propagation with the unbroken thin layer.
The POD analysis results showed that the static temperature gradient of the 1st order mode of initial and subsequent stages both exhibited a range of continuity change from left to right, and the frontal curvature of the cooling area decreased as the flame propagated in all stages.
The number of the low-temperature interval regions displayed an expanding form of a staircase with the increase of the mode order, especially for subsequent flame in which the interval areas became more and more slender.
Moreover, the level of information content in the multilevel modal space was mostly concentrated in the first 3 modes, especially in the 1st order mode, and the flame propagation pattern at the initial stage was more complicated than the subsequent based on the relational information content features.
American Psychological Association (APA)
Wu, Weimin& Yao, Jianyao& Liu, Jingcheng& Wu, Zejun& Liu, Jiawen. 2018. Numerical Study of Flame Propagation Morphology for Deflagration in the Pipeline Using Proper Orthogonal Decomposition. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1116746
Modern Language Association (MLA)
Wu, Weimin…[et al.]. Numerical Study of Flame Propagation Morphology for Deflagration in the Pipeline Using Proper Orthogonal Decomposition. Advances in Civil Engineering No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1116746
American Medical Association (AMA)
Wu, Weimin& Yao, Jianyao& Liu, Jingcheng& Wu, Zejun& Liu, Jiawen. Numerical Study of Flame Propagation Morphology for Deflagration in the Pipeline Using Proper Orthogonal Decomposition. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1116746
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116746