Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10356333 | Journal of Computational Physics | 2011 | 18 Pages |
Abstract
We implement the theory to form a 2-D non-hydrostatic compressible (Euler system) atmospheric model in which standard test cases confirm accuracy and stability. We maintain stability with time steps larger than CFLÂ =Â 1 (CFL number determined by the acoustic wave speed, not advection) but note that accuracy degrades unacceptably for most cases with CFLÂ >Â 2. For the smoothest test case, we ran out to CFLÂ =Â 7 to investigate the error associated with simulation at large CFL number time steps. Analysis suggests improvement of trajectory computations will improve error for large CFL numbers.
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Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
Matthew R. Norman, Ramachandran D. Nair, Fredrick H.M. Semazzi,