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نویسندگان
دانشگاه الزهرا، دانشکده علوم ریاضی
چکیده
در این مقاله از روش تکرار تغییراتی بهبود یافته برای حل یک مسئله هدایت گرمایی معکوس استفاده می‌کنیم. حرارت و شار کرانه‌ای تقریب زده می‌شود. این روش بر پایۀ استفاده از ضریب لاگرانژ برای تقریب مقادیر بهینه پارامترها در یک تابعک در فضای اقلیدسی است. در روش ارائه شده، یک دنباله با همگرایی سریع به جواب دقیق مسئله حاصل می‌شود. هم‌چنین این روش نیازی به گسسته‌سازی، خطی‌سازی یا اختلال‌های کوچک ندارد، از این رو، روشی کارا برای حل مسئله است. برای نشان دادن توانایی روش چند مثال ارائه می‌شود.
کلیدواژه‌ها

عنوان مقاله English

A modified VIM for solving an inverse heat conduction problem

نویسندگان English

M Rostamian
A. M. Shahrezaee
چکیده English

In this paper, we will use a modified variational iteration method (MVIM) for solving an inverse heat conduction problem (IHCP). The approximation of the temperature and the heat flux at are considered. This method is based on the use of Lagrange multipliers for the identification of optimal values of parameters in a functional in Euclidian space. Applying this technique, a rapid convergent sequence to the exact solution is produced. Moreover, this method does not require any discretization, linearization or small perturbation, thus it can be considered as an efficient method to solve this problem. To show the strength and capability of this method, some examples are given

کلیدواژه‌ها English

IHCP
unstable
ill-posed
MVIM
BFM
FSM
FDM
SFDM
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