D-113 近接連星系における降着円盤の輻射輸送を伴った 3 次元数値シミュレーション

概要

論文の詳細を見る
Three-dimensional numerical simulations of an accretion disc in a close binary system were performed by solving the Euler equations with radiative transfer. We used the one-dimensional (tangent-slab) approximation to calculate the radiative transfer for the vertical directions of the disc. The cooling effect of the disc is considered by discharging energy in only this directions. The influence of radiative cooling has been accounted for by assuming a specific heat ratio γ which is smaller than that of a mono-atomic gas (=5/3). In the present study, the specific heat ratio was assumed to be constant while radiative cooling effect was included as the non-adiabatic process. Our numerical simulations with radiative transfer demonstrated that spiral shocks existed in three-dimensional disc. It was found that its feature approached in the case of a lower γ but its tendency was weaker than that of two-dimensional simulation.
日本流体力学会の論文
2003-07-28