کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
220624 | 463342 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Digital simulations to solve electrochemical processes involving a diffusion coefficient varying linearly with the concentration
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
A simple mathematical procedure based on digital simulations is performed to solve electrochemical processes involving a concentration-dependent diffusion coefficient. Specifically, a semi-infinite diffusion process stimulated by a constant-flux is considered. The diffusion coefficient is assumed vary linearly with the concentration. This situation is not taken into account in most of the discussions presented in the scientific literature. A variable transformation is applied to obtain a dimensionless mathematical description of the problem. Concentration profiles are solved using explicit and implicit finite-difference algorithms. A more general and reliable description of the mass transport mechanism is obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 615, Issue 1, 1 April 2008, Pages 62-68
Journal: Journal of Electroanalytical Chemistry - Volume 615, Issue 1, 1 April 2008, Pages 62-68
نویسندگان
G.R. Hernández-Labrado, J.E. Collazos-Castro, J.L. Polo,