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| Paper: |
Numerical Dissipation and Wrong Propagation Speed of Discontinuities For Stiff Source Terms |
| Volume: |
459, 6th International Conference of Numerical Modeling of Space Plasma Flows (ASTRONUM 2011) |
| Page: |
359 |
| Authors: |
Yee, H. C.; Kotov, D. V.; Sjögreen, B. |
| Abstract: |
In compressible turbulent combustion/nonequilibrium flows, the constructions of numerical schemes
for (a) stable and accurate simulation of turbulence with strong shocks, and (b) obtaining correct propagation speed
of discontinuities for stiff reacting terms on “coarse grids” share one important ingredient — minimization of numerical
dissipation while maintaining numerical stability. This dual requirement
to achieve both numerical stability and accuracy with zero or minimal use
of numerical dissipation is most often conflicting for existing schemes that were designed for non-reacting
flows. The goal of this paper is to relate numerical dissipations that are inherited in a selected set of high order shock-capturing schemes with the onset of wrong propagation speed of discontinuities for two representative stiff detonation wave problems. |
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