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- W2048580354 abstract "We perform 2D and 3D numerical simulations of an accretion disc in a close binary system using the simplified flux vector splitting (SFS) finite volume method. In our calculations, the gas is assumed to be ideal with γ=1.01, 1.05, 1.1 and 1.2. The mass ratio of the mass-losing star to the mass-accreting star is unity. Our results show that spiral shocks are formed on the accretion disc in all cases. In 2D calculations we find that the smaller γ is, the more tightly the spiral winds. We observe this trend in 3D calculations as well in a somewhat weaker sense. Mach numbers in our discs are less than 10. These values are lower than the values in observed accretion discs in close binary systems. Recently, Steeghs, Harlaftis & Horne found the first convincing evidence for spiral structure in the accretion disc of the eclipsing dwarf nova binary IP Pegasi, using the technique known as Doppler tomography. Although the Mach numbers in present calculations are rather low, we may claim that the spiral structure that we discovered in earlier numerical simulations is now found observationally." @default.
- W2048580354 created "2016-06-24" @default.
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- W2048580354 date "2000-08-21" @default.
- W2048580354 modified "2023-09-27" @default.
- W2048580354 title "Two- and three-dimensional numerical simulations of accretion discs in a close binary system" @default.
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- W2048580354 doi "https://doi.org/10.1046/j.1365-8711.2000.03639.x" @default.
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