Flux-limited diffusion and Fokker-Planck equations

Journal Article · Sat Oct 01 04:00:00 EDT 1983 · Nucl. Sci. Eng.; (United States)

OSTI ID:6431720

Pomraning, G C

A recently reported description of radiative transfer is generalized to the case of a linear transport equation containing a Fokker-Planck treatment of very peaked scattering. The resulting diffusion theory is naturally flux (current) limited; i.e., the magnitude of the current cannot exceed the scalar flux. It is shown that the effect of the Fokker-Planck terms is, within this theory, identical to treating the very peaked scattering via the classical transport correction to the scattering cross section. This description of linear transport has potential application in charged-particle and high-energy neutron transport calculations.

• Research Organization: Institut fur Neutronenphysik und Reaktortechnik, INR Kernforschungszentrum Karlsruhe GmbH, Karlsruhe
• OSTI ID: 6431720
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 85:2; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

654001* -- Radiation & Shielding Physics-- Radiation Physics
Shielding Calculations & Experiments
654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE TRANSPORT
CORRECTIONS
CROSS SECTIONS
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUX DENSITY
FOKKER-PLANCK EQUATION
NEUTRAL-PARTICLE TRANSPORT
NEUTRON DIFFUSION EQUATION
NEUTRON TRANSPORT
PARTIAL DIFFERENTIAL EQUATIONS
RADIATION FLUX
RADIATION TRANSPORT
RADIATIVE CORRECTIONS
SCATTERING