User's guide for TWOHEX: a code package for two-dimensional, neutral-particle transport in equilateral triangular meshes

Technical Report · Mon Oct 01 04:00:00 EDT 1984

DOI:https://doi.org/10.2172/6257128· OSTI ID:6257128

Walters, W F; Brinkley, F W; Marr, D R

TWOHEX solves the two-dimensional multigroup transport equation on an equilateral triangular mesh in the x,y plane. Both regular and adjoint, inhomogeneous (fixed source) and homogeneous problems are solved. Three problem domains are treated by TWOHEX. The whole core domain is a 60/sup 0/ parallelogram with vacuum boundary conditions on each face. The third core domain is a 120/sup 0/ parallelogram with two vacuum and two rotational boundary conditions. The sixth core domain is a 60/sup 0/ parallelogram with two vacuum and two rotational boundary conditions. General anisotropic scattering is allowed and an anisotropic inhomogeneous source may be input as cell averages.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6257128
• Report Number(s): LA-10258-M; ON: DE85004482
• Country of Publication: United States
• Language: English

Related Subjects

654003* -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPUTER CODES
COMPUTERS
CRAY COMPUTERS
ITERATIVE METHODS
MESH GENERATION
MULTIGROUP THEORY
NEUTRAL-PARTICLE TRANSPORT
NEUTRON TRANSPORT
NEUTRON TRANSPORT THEORY
RADIATION TRANSPORT
T CODES
TRANSPORT THEORY
TWO-DIMENSIONAL CALCULATIONS