کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8902238 1631961 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computing positive stable numerical solutions of moving boundary problems for concrete carbonation
ترجمه فارسی عنوان
محاسبه راه حل عددی ثابت مثبت ثابت حرکت مشکلات مرزی برای کربنات بتن
کلمات کلیدی
مشکل مرزی آزاد کربنات بتن، تحلیل عددی، محاسبه، تغییر شکل جلو در جلو،
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات کاربردی
چکیده انگلیسی
This paper deals with the construction and computation of numerical solutions of a coupled mixed partial differential equation system arising in concrete carbonation problems. The moving boundary problem under study is firstly transformed in a fixed boundary one, allowing the computation of the propagation front as a new unknown that can be computed together with the mass concentrations of CO2 in air and water. Apart from the stability and the consistency of the numerical solution, constructed by a finite difference scheme, qualitative properties of the numerical solution are established. In fact, positivity of the concentrations, increasing properties of the propagation front and monotone behavior of the solution are proved. We also confirm numerically the t-law of propagation. Results are illustrated with numerical examples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational and Applied Mathematics - Volume 330, 1 March 2018, Pages 794-805
نویسندگان
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