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| Titel |
Verification of SpacePy's radial diffusion radiation belt model |
| VerfasserIn |
D. T. Welling, J. Koller, E. Camporeale |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 5, no. 2 ; Nr. 5, no. 2 (2012-03-06), S.277-287 |
| Datensatznummer |
250002441
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| Publikation (Nr.) |
 copernicus.org/gmd-5-277-2012.pdf |
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| Zusammenfassung |
| Model verification, or the process of ensuring that the prescribed equations
are properly solved, is a necessary step in code development. Careful,
quantitative verification guides users when selecting grid resolution and time
step and gives confidence to code developers that existing code is properly
instituted. This work
introduces the RadBelt radiation belt model, a new, open-source version
of the Dynamic Radiation Environment Assimilation Model (DREAM) and uses the
Method of Manufactured Solutions (MMS) to quantitatively verify it. Order of
convergence is investigated for a plethora of code configurations and source
terms. The ability to apply many different diffusion coefficients, including
time constant and time varying, is thoroughly investigated.
The model passes all of the tests, demonstrating correct implementation
of the numerical solver. The importance of DLL and source term dynamics
on the selection of time step and grid size is also explored. Finally,
an alternative method to apply the source term is
examined to illustrate additional considerations required when non-linear
source terms are used. |
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