نوع مقاله : مقاله پژوهشی
نویسنده
گروه ریاضی، دانشگاه کردستان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
In this paper, the fractional-order model for cooling of a semi-infinite body by radiation is considered.
In the supposed semi-infinite body, the equation of heat along with an initial condition and an asymptotic boundary condition form an equivalent equation in which the order of derivatives is halved.
This equation and a boundary condition introduced by the radiation heat transfer give rise to an initial value problem, whose differential equation is nonlinear and fractional order.
The semi-analytical solution to this nonlinear model was determined asymptotically at small and large times.
Moreover, two numerical methods including Grunwald-Letnikov approximation and Muntz-Legendre approximation yield numerical solutions to the problem.
کلیدواژهها [English]