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On a multiple timescales perturbation approach for a stefan problem with a time-dependent heat flux at the boundary

On a multiple timescales perturbation approach for a stefan problem with a time-dependent heat... In this paper, a classical Stefan problem is studied. It is assumed that a small, time-dependent heat influx is present at the boundary, and that the initial values are small. By using a multiple timescales perturbation approach, it is shown analytically (most likely for the first time in the literature) how the moving interface and its stability are influenced by the time-dependent heat influx at the boundary and by the initial conditions. Accurate approximations of the solution of the problem are constructed, which are valid on long timescales. The constructed approximations turn out to agree very well with solutions of problems for which similarity solutions are available (in numerical form). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nonlinear Dynamics Springer Journals

On a multiple timescales perturbation approach for a stefan problem with a time-dependent heat flux at the boundary

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References (32)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature B.V. 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
0924-090X
eISSN
1573-269X
DOI
10.1007/s11071-022-07734-7
Publisher site
See Article on Publisher Site

Abstract

In this paper, a classical Stefan problem is studied. It is assumed that a small, time-dependent heat influx is present at the boundary, and that the initial values are small. By using a multiple timescales perturbation approach, it is shown analytically (most likely for the first time in the literature) how the moving interface and its stability are influenced by the time-dependent heat influx at the boundary and by the initial conditions. Accurate approximations of the solution of the problem are constructed, which are valid on long timescales. The constructed approximations turn out to agree very well with solutions of problems for which similarity solutions are available (in numerical form).

Journal

Nonlinear DynamicsSpringer Journals

Published: Nov 1, 2022

Keywords: Multiple timescales; Stefan problem; Time-dependent heat flux; 35K55; 35R37; 35C20; 80A22; 35B20

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