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Finding a time-dependent reaction coefficient of a nonlinear heat source in an inverse heat conduction problem | ||
| Journal of Mathematical Modeling | ||
| مقاله 14، دوره 12، شماره 1، خرداد 2024، صفحه 17-32 اصل مقاله (651.7 K) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22124/jmm.2023.24413.2186 | ||
| نویسنده | ||
| Kamal Rashedi* | ||
| Department of Mathematics, University of Science and Technology of Mazandaran, Behshahr, Iran | ||
| چکیده | ||
| In this article, we propose an approximate technique for reconstructing a time-dependent reaction coefficient together with the surface heat flux histories and temperature distribution in a nonlinear inverse heat conduction problem (IHCP). We assume that the initial condition and the transient heat flux on the accessible boundary along with the temperature measured at specified interior locations in the domain of the problem are given as the input data. By applying the given measurements in a transformation, the main problem is reformulated as a certain parabolic problem and later a procedure based upon deploying the Ritz approximation along with the collocation method is applied which converts the problem to a nonlinear system of algebraic equations. Accurate numerical results in dealing with the exact initial and boundary data are obtained and regarding the perturbed boundary data, the regularization method based on cubic spline approximation is used, which results in obtaining stable numerical derivatives. | ||
| کلیدواژه‌ها | ||
| Inverse heat conduction؛ spectral technique؛ regularization method؛ operational matrix | ||
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آمار تعداد مشاهده مقاله: 113 تعداد دریافت فایل اصل مقاله: 207 |
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