期刊
PLASMA SOURCES SCIENCE & TECHNOLOGY
卷 24, 期 2, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/0963-0252/24/2/025004
关键词
plasma simulation; principal component analysis; non-equilibrium; plasma chemistry; dimension reduction
资金
- Interuniversity Attraction Poles Programme
- Belgian Science Policy Office [IAP-VII P7/34]
The chemical complexity of non-equilibrium plasmas poses a challenge for plasma modeling because of the computational load. This paper presents a dimension reduction method for such chemically complex plasmas based on principal component analysis (PCA). PCA is used to identify a low-dimensional manifold in chemical state space that is described by a small number of parameters: the principal components. Reduction is obtained since continuity equations only need to be solved for these principal components and not for all the species. Application of the presented method to a CO2 plasma model including state-to-state vibrational kinetics of CO2 and CO demonstrates the potential of the PCA method for dimension reduction. A manifold described by only two principal components is able to predict the CO2 to CO conversion at varying ionization degrees very accurately.
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