Hierarchical octree andk-d tree grids for 3D radiative transfer simulations
W. Saftly, M. Baes, P. Camps · Astronomy and Astrophysics · 2013
Context. A crucial ingredient for numerically solving the three-dimensional radiative transfer problem is the choice of the grid that discretizes the transfer medium. Many modern radiative transfer codes, whether using Monte Carlo or ray tracing techniques, are equipped with hierarchical octree-based grids to accommodate a wide dynamic range in densities.