Radiation hydrodynamics of the boundary layer in accretion disks. I - Numerical methods

Statistics – Computation

Scientific paper

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Accretion Disks, Cataclysmic Variables, Computational Astrophysics, Magnetohydrodynamics, Angular Momentum, Radiation Transport, Viscous Flow, White Dwarf Stars

Scientific paper

An explicit-implicit two-dimensional numerical method written for axisymmetric accretion flows is presented which includes viscosity, angular momentum, and radiation transport treated in the flux-limited diffusion approximation. The test runs undertaken with the code, that is generally of second-order accuracy in space, are described in detail. First preliminary models of the boundary layer structure in cataclysmic variables indicate a radial thickness of only several white dwarf pressure scale heights and that it is presumably confined close to the equatorial plane.

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