Dimension Reduction for Computational Enhancements in Thin Film Electrochemical Modelling. Issue 14 (10th November 2016)

• Record Type: Journal Article
• Authors: Simillion, Hans; Van den Steen, Nils; Montoya, Rodrigo; Terryn, Herman; Deconinck, Johan
• Is Part Of: Journal of the Electrochemical Society. Volume 163:Issue 14(2016)
• Page Start: C873
• Page End: C882
• Publication Date: 2016-11-10
• Subjects: corrosion -- dimension reduction -- modelling -- oxygen reduction -- thin film electrolytes; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0871614jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : The application of mechanistic electrochemical models is limited to small scale or short term simulations because of the high computational cost. In this work a model is developed to decrease the computational time by applying a dimension reduction based on an averaging theorem. In an example, a two-dimensional problem is reduced to a subsystem of coupled one-dimensional problems. For thin electrolyte films, the deviation between the two models becomes negligible; at an electrolyte thickness of 5% of the electrode width, the underestimation error drops below 10%. We can conclude that the dimension reduction is appropriate when dealing with thin electrolyte layers such as in atmospheric corrosion.