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Prog. Theor. Phys. Vol. 83 No. 4 (1990) pp. 723-732

Two-Dimensional Simulation of Hydrodynamic Instability in Supernova Explosions

Mitsue Den, Tatsuo Yoshida^* and Yoshiyuki Yamada^**

Department of Physics, College of Liberal Arts and Science, Kyoto University, Kyoto 606
^*Department of Physics, Hokkaido University, Sapporo 060
^**Department of Physics, Kyoto University, Kyoto 606

(Received January 22, 1990)

Abstract:

We investigate the growth of the hydrodynamic instability in supernova explosion by two-dimensional numerical calculations. The interfaces between the zones with different chemical compositions in the progenitor are expected to be Rayleigh-Taylor unstable and to cause mixing. The location, amplitude and types of initial perturbations may affect the extent to mixing. We study the relation between the extent of mixing and the initial perturbation, especially the location and amplitude of seeds. A 5% velocity perturbation added at and inside the hydrogen/helium (H/He) interface leads to mixing of material but the same perturbation added at and inside the helium/heavy elements (He/C+O) interface does not. A perturbation with much larger amplitude is needed at the inner interface to cause mixing. Thus our results show that the extent of the mixing depends strongly on the amplitude and the location of the initial perturbation.

URL : http://ptp.ipap.jp/link?PTP/83/723/
DOI : 10.1143/PTP.83.723

[ Full Text PDF : FREE ACCESS (484K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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References:

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Citing Article(s) :

1. Progress of Theoretical Physics Vol. 84 No. 3 (1990) pp. 436-443 :

   Three Dimensional Simulations of Supernova Explosion. I

   Yoshiyuki Yamada, Takashi Nakamura and Ken-ichi Oohara

2. Progress of Theoretical Physics Vol. 86 No. 6 (1991) pp. 1211-1225 :

   Two-Dimensional Simulations of Hydrodynamic Instability in Supernova Explosion. II

   Yoshiyuki Yamada, Tatsuo Yoshida and Mitsue Den

3. Progress of Theoretical Physics Vol. 89 No. 6 (1993) pp. 1175-1182 :

   Convective Instability in Hot Bubble in a Delayed Supernova Explosion

   Shoichi Yamada, Tetsuya Shimizu and Katsuhiko Sato

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