Name
Title | ||
|---|---|---|
Stabilised approximation of interior-layer solutions of a singularly perturbed semilinear reaction–diffusion problem |
Abstract | ||
|---|---|---|
A semilinear reaction–diffusion two-point boundary value problem, whose second-order derivative is multiplied by a small positive parameter $${\varepsilon^2}$$, is considered. It can have multiple solutions. The numerical computation of solutions having interior transition layers is analysed. It is demonstrated that the accurate computation of such solutions is exceptionally difficult. To address this difficulty, we propose an artificial-diffusion stabilization. For both standard and stabilised finite difference methods on suitable Shishkin meshes, we prove existence and investigate the accuracy of computed solutions by constructing discrete sub- and super-solutions. Convergence results are deduced that depend on the relative sizes of $${\varepsilon}$$ and N, where N is the number of mesh intervals. Numerical experiments are given in support of these theoretical results. Practical issues in using Newton’s method to compute a discrete solution are discussed. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1007/s00211-011-0395-y | Numerische Mathematik |
Keywords | Field | DocType |
diffusion problem,interior-layer solution,diffusion two-point boundary value,discrete sub,accurate computation,computed solution,interior transition layer,numerical experiment,semilinear reaction,artificial-diffusion stabilization,convergence result,discrete solution,stabilised approximation,numerical computation,mathematics | Convergence (routing),Boundary value problem,Mathematical optimization,Polygon mesh,Mathematical analysis,Finite difference method,Reaction–diffusion system,Mathematics,Computation | Journal |
Volume | Issue | ISSN |
119 | 4 | 0945-3245 |
Citations | PageRank | References |
1 | 0.63 | 1 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Natalia Kopteva | 1 | 130 | 22.08 |
| Martin Stynes | 2 | 273 | 57.87 |