Speaker
Johan Pires Bjørgen
(Institutet för solfysik, Stockholm University)
Description
We implemented a non-linear multigrid scheme in our radiative transfer code MULTI3D
to improve the convergence speed when the discretization is refined. This property
are highly desirable for solving the radiative transfer problem for high-resolution
atmosphere models produced by MHD codes. We achieve this by solving the radiative
transfer problem on multiple grids with different mesh by fast-approximation scheme
(FAS) multigrid. We present timing tests and example calculations based on atmosphere
models computed with the Bifrost code.
Primary author
Johan Pires Bjørgen
(Institutet för solfysik, Stockholm University)
