中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (4): 52-57.

• 研究论文 • 上一篇    下一篇

电化学数字模拟的一种新不等格分格法

林祥钦, 薄爱丽   

  1. 国家电化学和光谱研究分析中心, 中国科学院长春应用化学研究所电分析化学开放实验室, 长春 130022
  • 收稿日期:1994-09-21 修回日期:1995-03-15 出版日期:1995-08-10 发布日期:1995-08-10
  • 基金资助:
    国家自然科学基金资助项目

A New Concept Generation of a Nonuniform Space - Volume-GFid System for Electrochemical Digital Simulation

Lin Xiangqin, Bo Aili   

  1. National Analyticla Research Center of Electrochemistry and Spectroscopy, Laboratory of Electroanalyticla Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1994-09-21 Revised:1995-03-15 Published:1995-08-10 Online:1995-08-10

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摘要： 提出一种用于电化学数字模拟的不等格分格法.该法以固定的分格比β逐次截取接近电极表面的洛液层,形成一列非完全等比扩展格,第1、2格宽比为β-1,第2格以后以β等比扩展;第i格的外边界坐标为Xi*=ΔXβi-1用显式有限差分算法进行了检验,证明当β=2时,该算法有相当好的精确度和稳定性,运算速度较快,做定性实验时,可以取β值大到16来节省运算时间.

关键词: 电分析化学, 数字模拟, 不等格分格法

Abstract: A nonuniform space-volume-grid system is generated by repeatedly dividing thesolution layer next to the electrode surface. For outer limit of the ith grid it is simply ex-pressed as.With a dividing factorβ≥2the generated space-volume grid is ex-panded by the factor ofβfor i>2,however the volume ratio for the second and the first gridis onlyβ-1.The simulation accuracy and stability of the grid system for explicit-finite-difference algorithm are characterized by experiments of chronoamperometry and cyclicvoltammetry experiments,The results demonstrate that the simulation is relatively stableand accurate enough for theoretical comparison at β=2.This system can even be operated for time-saving qualitative test at βvalues as large as 16.

Key words: electroanalytical chemistry, digital simulation, nonumiform space-volume grid

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