Iterative solution methods
Applied Numerical Mathematics
An upwind difference scheme on a novel Shishkin-type mesh for a linear convection-diffusion problem
Journal of Computational and Applied Mathematics
Pointwise convergence of approximations to a convection—diffusion equation on a Shishkin mesh
Applied Numerical Mathematics
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We consider a numerical scheme for a one-dimensional, time-dependent, singularly perturbed convection-diffusion problem. The problem is discretized in space by a standard finite element method on a Bakhvalov-Shishkin type mesh. The space error is measured in an L2 norm. For the time integration, the implicit midpoint rule is used. The fully discrete scheme is shown to be convergent of order 2 in space and time, uniformly in the singular perturbation parameter.