Photon transport studies in media with strongly anisotropic scattering with the Boltzmann-Fokker-Planck equation

Journal Article · Fri May 01 04:00:00 EDT 1987 · Nucl. Sci. Eng.; (United States)

OSTI ID:6060062

Kumar, A; Ligou, J

The Boltzmann-Fokker-Planck (BFP) equation has been applied to treat the photon transport in highly anisotropic scattering media. Some benchmark cases relating to haze and cloud media have been investigated. It is found that, in general, the number of Legendre moments required for the BFP equation is a factor of --5 lower compared to that for the standard (discrete ordinates S/sub n/) approach for solving the Boltzmann equation for the comparable precision on the integral quantities like the albedo and transmission factor. But BFP is much more economical if one seeks precision on angular fluxes.

• Research Organization: Institut de Genie Atomique, Ecole Polytechnique Federale de Lausanne, CH-1015, Lausanne
• OSTI ID: 6060062
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 96:1; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCURACY
ALBEDO
ANISOTROPY
BENCHMARKS
BOLTZMANN EQUATION
DIFFERENTIAL EQUATIONS
DISCRETE ORDINATE METHOD
EQUATIONS
FOKKER-PLANCK EQUATION
FUNCTIONS
INCIDENCE ANGLE
LEGENDRE POLYNOMIALS
NEUTRAL-PARTICLE TRANSPORT
PARTIAL DIFFERENTIAL EQUATIONS
PHOTON TRANSPORT
POLYNOMIALS
RADIATION FLUX
RADIATION TRANSPORT
SCATTERING