Exponential characteristic spatial quadrature for discrete ordinates radiation transport on an unstructured grid of triangular cells

Conference · Sun Dec 31 00:00:00 EST 1995

OSTI ID:459211

Mathews, K A; Brennan, C R ^[1]

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1. Air Force Institute of Technology, Wright-Patterson, OH (United States)

The exponential characteristic method is one of a family of nonlinear spatial quadratures which are positive and at least second order accurate. The authors initially developed the method in slab geometry, where it gave accurate results for deep penetration problems using coarse meshes. Characteristic methods are restricted to Cartesian geometries, so they next tested it with rectangular cells, where it was again a strong performer. Here the authors extend the method to unstructured grids of arbitrarily shaped and oriented triangles and report on its performance.

• OSTI ID: 459211
• Report Number(s): CONF-950420-; TRN: 97:007115
• Resource Relation: Conference: International conference on mathematics and computations, reactor physics, and environmental analyses, Portland, OR (United States), 30 Apr - 4 May 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the international conference on mathematics and computations, reactor physics, and environmental analyses. Volume 1 and 2; PB: 1629 p.
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
RADIATION TRANSPORT
DISCRETE ORDINATE METHOD
CALCULATION METHODS
QUADRATURES
NONLINEAR PROBLEMS