Turbulence model for simulation of the flame front propagation in SNIa

Abstract

Turbulence significantly influences the dynamics of flame in SNIa. The large Reynolds number makes impossible the direct numerical simulations of turbulence, and different models of turbulence have to be used. Here we present the simulations with the $k$-$\epsilon$ model. The turbulence is generated by the RTL instability and crucially influences flame front velocity, resulting in $v_{\mathrm{flame}}\sim 300$ km/s. The model reproduces turbulent properties in low-dimensional simulations and can be used for the low-cost studies.

15 pages, 5 figures

References in corpus (4)

• A localised subgrid scale model for fluid dynamical simulations in astrophysics I: Theory and numerical tests
• A localised subgrid scale model for fluid dynamical simulations in astrophysics II: Application to type Ia supernovae
• Type Ia Supernova: Calculations of Turbulent Flames Using the Linear Eddy Model
• Flame-driven deflagration-to-detonation transitions in Type Ia supernovae?

Cited by in corpus (2)

• Dark Matter Triggers of Supernovae
• Exploration of Aspherical Ejecta Properties in Type Ia Supernova: Progenitor Dependence and Applications to Progenitor Classification