Exploring well-posedness and asymptotic behavior in an Advection–Diffusion–Reaction (ADR) model

IF 2.6 2区 数学 Q1 MATHEMATICS, APPLIED Journal of Computational and Applied Mathematics Pub Date : 2025-07-01 Epub Date: 2025-01-01 DOI:10.1016/j.cam.2024.116465
Mohammed Elghandouri , Khalil Ezzinbi , Lamiae Saidi
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Abstract

In this paper, the existence, uniqueness, and positivity of solutions, as well as the asymptotic behavior through a finite fractal dimensional global attractor for a general Advection–Diffusion–Reaction (ADR) equation, are investigated. Our findings are innovative, as we employ semigroups and global attractors theories to achieve these results. Also, an analytical solution of a two-dimensional Advection–Diffusion Equation is presented. And finally, two Explicit Finite Difference schemes are used to simulate solutions in the two- and three-dimensional cases. The numerical simulations are conducted with predefined initial and Dirichlet boundary conditions.
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探讨平流-扩散-反应(ADR)模型的适定性和渐近性
本文研究了一类一般平流-扩散-反应(ADR)方程解的存在性、唯一性和正性,以及通过有限分形维全局吸引子的渐近性。我们的发现是创新的,因为我们采用了半群和全局吸引子理论来实现这些结果。同时,给出了二维平流扩散方程的解析解。最后,用两种显式有限差分格式分别模拟了二维和三维情况下的解。在初始边界条件和狄利克雷边界条件下进行了数值模拟。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
5.40
自引率
4.20%
发文量
437
审稿时长
3.0 months
期刊介绍: The Journal of Computational and Applied Mathematics publishes original papers of high scientific value in all areas of computational and applied mathematics. The main interest of the Journal is in papers that describe and analyze new computational techniques for solving scientific or engineering problems. Also the improved analysis, including the effectiveness and applicability, of existing methods and algorithms is of importance. The computational efficiency (e.g. the convergence, stability, accuracy, ...) should be proved and illustrated by nontrivial numerical examples. Papers describing only variants of existing methods, without adding significant new computational properties are not of interest. The audience consists of: applied mathematicians, numerical analysts, computational scientists and engineers.
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