Dimension reduction of non-equilibrium plasma kinetic models using principal component analysis

K.S.C. Peerenboom, A. Parente, T. Kozak, A. Bogaerts, G. Degrez

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Abstract

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.
Original languageEnglish
Article number025004
Number of pages14
JournalPlasma Sources Science and Technology
Volume24
Issue number2
DOIs
Publication statusPublished - 2015

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