期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 815, 期 -, 页码 210-219出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2018.03.006
关键词
Super-time-stepping; Digital simulation; Computational electrochemistry; Chronoamperometry; Cyclic voltanunetry
Super-time-stepping denotes a class of special strategies of choosing nonuniform time steps in finite-difference solutions of partial differential equations by conditionally stable explicit techniques, that allow one to effectively overcome limits of numerical stability. This is achieved by demanding the stability only at ends of certain sequences of time steps, called supersteps. The utility of one variant of the super-time-stepping is examined, for digital simulations of electroanalytical experiments described by reaction-diffusion partial differential equations in one-dimensional space geometry. The tests focus on example models of chronoamperometry and cyclic voltammetry. Reductions of computational times, and improvements of the efficiency of such simulations are observed. Implementation of the super-time-stepping requires only minor changes in computer programs for conventional explicit simulation methods. Super-time-stepping can be combined both with sequential and parallel computations, but it should be of particular interest in connection with the efforts towards parallelisation of electroanalytical simulations.
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