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| Paper: |
Code Comparison for MHD Fast-Mode Wave Propagation |
| Volume: |
459, 6th International Conference of Numerical Modeling of Space Plasma Flows (ASTRONUM 2011) |
| Page: |
353 |
| Authors: |
Li, S. |
| Abstract: |
We propose a simple MHD fast wave propagation problem for
verification and comparison of different numerical methods and MHD
codes. The initially smooth MHD fast waves get steepening with time
and eventually form shocks. Because the MHD shock moves
slow compared with the fast magneto-sonic speed, many numerical
methods and codes produce artificial numerical oscillations near
the shock even if these numerical methods have the non-oscillatory
property. The amplitude of the oscillations depend on
Riemann solver, spatial limiter, and the accuracy order of
reconstruction.
The Riemann-solver-free central scheme on overlapping grid developed by
the author (2008) performs extremely well for this type of problems. |
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