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- N.V. Erkaev, H. Lammer, +8 authors M. Güdel
- 2014

- A. Stökl, E. A. Dorfi
- Computer Physics Communications
- 2007

- Alexander Stökl
- 2009

Context. Despite all advances in multi-dimensional hydrodynamics, investigations of stellar evolution and stellar pulsations still depend on one-dimensional computations. The present work devises an alternative to the mixing length theory or turbulence models usually adopted for the modelling of convective transport in such studies. Aims. A time dependent… (More)

- Alexander Stökl
- 2008

Assuming that the largest convective patterns generate the majority of convective transport, we devise a numerical scheme simplifying the convective velocity field using two parallel radial columns to represent upand downstream flows. Horizontal exchange is described by fluid flow and radiation over the interface between those two columns. The main… (More)

- Alexander Stökl
- 2008

Context. In spite of all the advances in multi-dimensional hydrodynamics, investigations of stellar evolution and stellar pulsations still depend on one-dimensional computations. This paper devises an alternative to the mixing-length theory or turbulence models usually adopted in modelling convective transport in such studies. Aims. The present work… (More)

- E. A. Dorfi, H. Pikall, A. Stökl, A. Gautschy
- Computer Physics Communications
- 2006

We present a new implicit numerical discretization for the equations of radiation hydrodynamics (RHD) which is based on a more geometrical representation of a finite volume scheme suitable for spherical systems. In particular, the motion of the grid points is directly included by appropriate volume changes. Several examples illustrate the accuracy gained by… (More)

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