2001/11/01 by Tom Abel, Benjamin D. Wandelt · 1 citation
Computer Science · Engineering · Physics and Astronomy · #Adaptive mesh refinement #Angular resolution (graph drawing) #Computational Fluid Dynamics and Aerodynamics #Computer Graphics and Visualization Techniques #Distributed ray tracing #Fluid Dynamics Simulations and Interactions #Monte Carlo method #Point (geometry) #Point source #Radiation #Radiative transfer #Ray tracing (physics) #astro-ph
paper · pdf · doi:10.1046/j.1365-8711.2002.05206.x
published as Mon.Not.Roy.Astron.Soc. 330 (2002) L53 · 5 pages, revised manuscript of a Letter to the Editor for publication in MNRAS
arxiv created 2001/11/01 · openalex publication_date 2002/03/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We describe a novel adaptive ray tracing scheme to solve the equation of radiative transfer around point sources in hydrodynamical simulations. The angular resolution adapts to the local hydrodynamical resolution and hence is of use for adaptive meshes as well as adaptive smooth particle hydrodynamical simulations. Recursive creation of rays ensures ease of implementation. The multiple radial integrations needed to solve the time-dependent radiative transfer are speeded up significantly using a quad-tree once the rays are cast. Simplifications advantageous for methods with one radiation source are briefly discussed. The suggested method is easily generalized to speed up Monte Carlo radiative transfer techniques. In summary, a nearly optimal use of long characteristics is presented and aspects of its implementation and comparison with other methods are given.