Short-N characteristic radiative transfer method in 2D cylindrical RZ coordinates

Details Short-N characteristic radiative transfer method in 2D cylindrical RZ coordinates Short-N characteristic radiative transfer method in 2D cylindrical RZ coordinates

2007-03-12

arxiv.org/abs/astro-ph/0703264v1

Astronomy and Astrophysics

Astrophysics

11 pages, 7 figures, 2 tables

Scientific paper

We present a new radiative transfer method Short-N Characteristics that is a hybrid between the standard long characteristic methods and the standard short characteristic methods. We have implemented the numerical method within the SPECT3D imaging and spectral analysis application. Numerical experiments have shown that the short-N method is capable of reproducing the accuracy of the long characteristic methods, while delivering the CPU time efficiency of the short characteristic methods. We apply the short-N method to 2.5D cylindrical coordinates, i.e., we assume a 3D problem under azimuthal symmetry leading to a 2D mathematical problem with r-z as the independent spatial coordinates (2DRZ). We are currently working to extend this new method to other geometries.

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