Other
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...279..499s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 2, p. 499-505
Other
3
Atmospheric Models, Hydrodynamics, Shock Waves, Stellar Atmospheres, Stellar Models, Wave Propagation, Algorithms, Conservation Equations, Flux Density, Internal Energy, Isothermal Processes, Iterative Solution, Mathematical Models
Scientific paper
The numerical calculation of vertically propagating hydrodynamic shock waves in a plane atmosphere by the ETBFCT-version of the Flux Corrected Transport (FCT) method by Boris and Book is discussed. The results are compared with results obtained by a characteristic method with shock fitting. We show that the use of the internal energy density as a dependent variable instead of the total energy density can give very inaccurate results. Consequent discretization rules for the gravitational source terms are derived. The improvement of the results by an additional iteration step is discussed. It appears that the FCT method is an excellent method for the accurate calculation of shock waves in an atmosphere.
Fleck Bernard
Schmitz Felix
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