One-dimensional models for neutral particle transport in ducts

Journal Article · Thu May 01 04:00:00 EDT 1986 · Nucl. Sci. Eng.; (United States)

OSTI ID:5664833

Larsen, E W; Malvagi, F; Pomraning, G C

The problem of monoenergetic neutral particle transport in an evacuated duct of arbitrary cross-sectional geometry with partial isotropic reflection at the duct walls is considered. This five-variable (three in space, two in angle) transport problem is approximated by a coupled set of N two-variable (one in space, one in angle) problems via a simple Galerkin (or variational) procedure. Numerical comparisons with exact results indicate that the N=2 approximation is remarkably accurate for predicting the wall absorption and particle fluxes at the duct ends.

• Research Organization: Los Alamos National Lab., Los Alamos, NM
• OSTI ID: 5664833
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 93:1; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
ABSORPTION
DUCTS
GALERKIN-PETROV METHOD
INCIDENCE ANGLE
ISOTROPY
ITERATIVE METHODS
MATHEMATICAL MODELS
NEUTRAL-PARTICLE TRANSPORT
ONE-DIMENSIONAL CALCULATIONS
RADIATION TRANSPORT
REFLECTION
SPACE DEPENDENCE
WALLS