کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | ترجمه فارسی | نسخه تمام متن |
---|---|---|---|---|---|
4625458 | 1631760 | 2017 | 15 صفحه PDF | سفارش دهید | دانلود رایگان |
• Singularly perturbed time delay partial differential equation is considered.
• Boundary condition is of Robin type.
• A parameter uniform numerical method is suggested.
• An error estimate is derived and the error is of order two.
• An illustration is provided.
A Robin type boundary value problem for a singularly perturbed parabolic delay differential equation is studied on a rectangular domain in the x - t plane. The second-order space derivative is multiplied by a small parameter, which gives rise to parabolic boundary layers on the two lateral sides of the rectangle. A numerical method comprising a standard finite difference scheme on a rectangular piecewise uniform fitted mesh of Nx × Nt elements condensing in the boundary layers is suggested and it is proved to be parameter-uniform. More specifically, it is shown that the errors are bounded in the maximum norm by C(Nx−2ln2Nx+Nt−1), where C is a constant independent of Nx, Nt and the small parameter. To validate the theoretical result an example is provided.
Journal: Applied Mathematics and Computation - Volume 296, 1 March 2017, Pages 101–115