Summary
Streamline diffusion is a well-known damping strategy in the numerical approximation of transport-dominated transport-diffusion problems by the finite element method. It combines the effect of higher order upwinding with the flexibility of the variational approach. However, the reliable and accurate resolution of shock-like solution structures requires a refinement of the computational mesh in space and also in time. In this note we propose a strategy for such a mesh refinement within an implicit time stepping process which is based on a local predictor-corrector concept. This approach allows for significant savings with respect to storage and computing time. Some test results are reported for the 1-d Riemann shock tube problem. The mechanism underlying this mesh control strategy can be explained through a rigorous theoretical analysis.
This work was supported by the Deutsche Forschungsgemeinschaft, SFB 123 and SFB 359 Universität Heidelberg
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Rannacher, R., Zhou, G. (1994). Mesh Adaptation via a Predictor-Corrector Strategy in the Streamline Diffusion Method for Nonstationary Hyperbolic Systems. In: Hackbusch, W., Wittum, G. (eds) Adaptive Methods — Algorithms, Theory and Applications. Notes on Numerical Fluid Mechanics (NNFM). Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-663-14246-1_16
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DOI: https://doi.org/10.1007/978-3-663-14246-1_16
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
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