Macroscopic Models of Radiative Transfer as Applied to Computation of the Radiation Field in the Solar Atmosphere
Abstract
The two stream method, also called the two-flux approximation, distinguishes between incoming and outgoing radiation for improved accuracy relative to one-stream methods while retaining reduced numerical cost relative to full RTE solutions (Mihalas & Mihalas 1984; Siegel & Howell 2001). It assumes different radiation from each source, each uniform over its half-space, which constitutes the weak point of the method. This concept has recently been used by Dubroca & Klar (2002), where they derive a unidimensional macroscopic moment radiation model for each stream; they call this a half moment model. The pressure closure is obtained by using maximization of entropy (Minerbo 1978), which allows them to avoid any isotropic assumption about the radiative intensities.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2003
- Accession Number
- ADP014788
Entities
People
- A. A. Wray
- J. F. Ripoll