Mathematical modeling of heat process in a cylindrical domain with nonlinear thermal coefficients and a heat source on the axis

IF 1.8 3区 数学 Q1 MATHEMATICS, APPLIED Nonlinear Analysis-Real World Applications Pub Date : 2025-01-27 DOI:10.1016/j.nonrwa.2025.104315
Julieta Bollati , Adriana C. Briozzo , Stanislav N. Kharin , Targyn A. Nauryz
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Abstract

A mathematical model of the heat process in one-dimensional domain which consists of a Stefan problem governed by a cylindrical heat equation with a heat source on the axis z=0 and nonlinear thermal coefficients is studied. The developed model is particularly applicable for analyzing temperature variations on electrical contact surfaces, where precise thermal management is crucial for ensuring optimal performance and preventing overheating. The use of similarity transformation allows us to obtain an equivalent system of nonlinear integral equations that is solved by applying a fixed point theorem, providing a rigorous mathematical foundation for our analysis.
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具有非线性热系数和轴上热源的圆柱形域中热过程的数学建模
研究了一个由热源在z=0轴上且具有非线性热系数的圆柱形热方程所控制的Stefan问题组成的一维热过程数学模型。开发的模型特别适用于分析电接触表面的温度变化,其中精确的热管理对于确保最佳性能和防止过热至关重要。利用相似变换,我们可以得到一个等效的非线性积分方程组,通过应用不动点定理求解,为我们的分析提供了严格的数学基础。
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来源期刊
CiteScore
3.80
自引率
5.00%
发文量
176
审稿时长
59 days
期刊介绍: Nonlinear Analysis: Real World Applications welcomes all research articles of the highest quality with special emphasis on applying techniques of nonlinear analysis to model and to treat nonlinear phenomena with which nature confronts us. Coverage of applications includes any branch of science and technology such as solid and fluid mechanics, material science, mathematical biology and chemistry, control theory, and inverse problems. The aim of Nonlinear Analysis: Real World Applications is to publish articles which are predominantly devoted to employing methods and techniques from analysis, including partial differential equations, functional analysis, dynamical systems and evolution equations, calculus of variations, and bifurcations theory.
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