Timeline for Problem with implementing linear advection using DG-method
Current License: CC BY-SA 3.0
4 events
when toggle format | what | by | license | comment | |
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Dec 13, 2014 at 10:03 | comment | added | David Ketcheson | One of your comments is correct; I have accordingly changed my answer. | |
Dec 13, 2014 at 10:02 | history | edited | David Ketcheson | CC BY-SA 3.0 |
added 81 characters in body
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Dec 13, 2014 at 9:30 | comment | added | user136475 | Thank you for answering. I know that the central differences with explicit Euler in time is unconditionally unstable, but there are other methods like Lax-Wendroff, Beam-Warming that are second order and stable for some CFL condition. So, this must mean that the DG-method above is a central difference scheme essentially, but I don't find it very transparent. But, essentially changing to Heun's method would then be stable I assume. How can I check the stability via von Neumann analysis? I am used to FD-schemes and going to FV- or DG-schemes is not straight-forward. | |
Dec 13, 2014 at 4:23 | history | answered | David Ketcheson | CC BY-SA 3.0 |