Voronoi Finite Volumes and Pressure Robust Finite Elements for Electrolyte Models with Finite Ion Sizes

摘要

Liquid electrolytes—fluids containing electrically-charged ions—occur in electrochemical energy conversion systems, nanofluidic devices, biological tissues and other systems. Numerical modeling provides a valuable tool to understand the strongly coupled nonlinear effects occurring in these systems. This paper reviews a recently developed strategy to simulate electro-osmotic flows with finite ion size constraints, which uses a Voronoi finite volume method to discretize charge distribution and ion transport. It demonstrates the demand for improved automatic mesh generation that is capable to provide problem dependent anisotropic meshes.