Numerical studies of nonspherical carbon combustion models

Details Numerical studies of nonspherical carbon combustion models Numerical studies of nonspherical carbon combustion models

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...261l.109m&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 261, Oct. 15, 1982, p. L109-L115.

Statistics

Computation

50

Carbon Stars, Nuclear Fusion, Stellar Evolution, Stellar Models, Stellar Structure, Atmospheric Models, Convective Flow, Deflagration, Detonation Waves, Stellar Atmospheres, Two Dimensional Flow

Scientific paper

First results of axisymmetric numerical studies of the final evolution of degenerate C + O cores are reported. The two-dimensional convective flow is treated without a phenomenological theory of convection. The computations show that, in the beginning, the nuclear burning propagates slowly outward from the center of the star in a spherical combustion front. Small-scale eddies form, giving rise to bumps in the front. The bumps grow into blobs and eventually into fingers, which steadily elongate relative to the rest of the combustion front. This behavior is not well described by either the detonation or deflagration models, being more complex than either.

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