Physics
Scientific paper
Apr 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999phr...311..395g&link_type=abstract
Physics Reports, Vol. 311, No. 3 - 5, p. 395 - 404
Physics
Novae: Outbursts, Novae: Stellar Evolution
Scientific paper
Deviations from spherical symmetry are expected at the ignition and during the runaway of explosive hydrogen burning in a nova outburst. In all cases, the non-spherically symmetric effects are closely related to the coupling of convective flow with explosive nuclear burning and to the mixing and heating process of the relevant fuel. Those effects, which were analyzed in the past only by applying parametric and dimensional methods, can be carefully studied once the exact multidimensional equations are solved. Still, the restrictions of finite resolution and ranges of scales that can be included in the simulations should be taken into account. The author presents here the achievements he had up to now in his study, and he discusses the weak points related to the coupling between numeric effects and real physical phenomena, mainly concerning the mixing process. He introduces the method by which he tries to get accurate quantitative results for the relevant physical quantities, such as the spreading time, the exact amount of mixing and the size and average structure of the convective zone.
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