Version 9 (modified by 13 years ago) ( diff ) | ,
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2D Field Loop Advection
Problem Background
For Background and problem setup see http://www.astro.virginia.edu/VITA/ATHENA/field-loop.html
And for a movie of what the solution should look like see http://www.youtube.com/watch?v=ztaoT1yPloc
Reason for Test
This test is run in order to verify that the ConstrainedTransport method to evolve magnetic fields is working correctly.
Since this problem should evolve in a well-defined way, any major deviations from this evolution signal a possible bug somewhere in one or more of the integration schemes.
This problem includes a restart test to make sure that the restarted magnetic loop is still divergenceless.
Results
Original Test
The new chombo can be verified by looking at the magnitude of the magnetic field in the x-direction. You should see that the field loop has advected to the right, and is rotating counter-clockwise as shown by the reference chombo.
Restart Test
The test is restarted from the end of the original test and run a bit further. You should see that the field loop has advected more to the right and is starting to come back around as shown in the restart reference chombo.
Test | Reference Chombo | New Chombo |
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Original | ![]() | ??? |
Restart | ![]() | ??? |
Attachments (2)
- Bx_ref.png (32.0 KB ) - added by 13 years ago.
- Bx_ref_restart.png (32.0 KB ) - added by 13 years ago.
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