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Pointwise a posteriori error bounds for blow-up in the semilinear heat equation
Abstract
This work is concerned with the development of an adaptive space-time numerical method, based on a rigorous a posteriori error bound, for the semilinear heat equation with a general local Lipschitz reaction term whose solution may blow-up in finite time. More specifically, conditional a posteriori error bounds are derived in the LβLβ norm for the first order (Euler) in time, implicit-explicit (IMEX), conforming finite element method in space discretization of the problem. Numerical experiments applied to both blow-up and non blow-up cases highlight the generality of our approach and complement the theoretical results- article
- Blow-up singularities
- Conditional a posteriori error estimates
- IMEX method
- Semilinear heat equation
- /dk/atira/pure/subjectarea/asjc/2600/2612; name=Numerical Analysis
- /dk/atira/pure/subjectarea/asjc/2600/2605; name=Computational Mathematics
- /dk/atira/pure/subjectarea/asjc/2600/2604; name=Applied Mathematics