Abstract
A singularly perturbed quasi-linear two-point boundary value problem with an exponential boundary layer is discretized on arbitrary nonuniform meshes using first- and second-order difference schemes, including upwind schemes. We give first- and second-order maximum norm a posteriori error estimates that are based on difference derivatives of the numerical solution and hold true uniformly in the small parameter. Numerical experiments support the theoretical results.
| Original language | English |
|---|---|
| Pages (from-to) | 423-441 |
| Number of pages | 19 |
| Journal | SIAM Journal on Numerical Analysis |
| Volume | 39 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2002 |
| Externally published | Yes |
Keywords
- A posteriori error estimate
- Convection-diffusion
- Finite difference scheme
- Grid equidistribution
- Layer-adapted mesh
- Quasi-linear problem
- Singular perturbation
- Upwind scheme