The TORT three-dimensional discrete ordinates neutron/photon transport code (TORT version 3)

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Description

TORT calculates the flux or fluence of neutrons and/or photons throughout three-dimensional systems due to particles incident upon the system`s external boundaries, due to fixed internal sources, or due to sources generated by interaction with the system materials. The transport process is represented by the Boltzman transport equation. The method of discrete ordinates is used to treat the directional variable, and a multigroup formulation treats the energy dependence. Anisotropic scattering is treated using a Legendre expansion. Various methods are used to treat spatial dependence, including nodal and characteristic procedures that have been especially adapted to resist numerical distortion. A method ... continued below

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212 p.

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Rhoades, W.A. & Simpson, D.B. October 1, 1997.

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Description

TORT calculates the flux or fluence of neutrons and/or photons throughout three-dimensional systems due to particles incident upon the system`s external boundaries, due to fixed internal sources, or due to sources generated by interaction with the system materials. The transport process is represented by the Boltzman transport equation. The method of discrete ordinates is used to treat the directional variable, and a multigroup formulation treats the energy dependence. Anisotropic scattering is treated using a Legendre expansion. Various methods are used to treat spatial dependence, including nodal and characteristic procedures that have been especially adapted to resist numerical distortion. A method of body overlay assists in material zone specification, or the specification can be generated by an external code supplied by the user. Several special features are designed to concentrate machine resources where they are most needed. The directional quadrature and Legendre expansion can vary with energy group. A discontinuous mesh capability has been shown to reduce the size of large problems by a factor of roughly three in some cases. The emphasis in this code is a robust, adaptable application of time-tested methods, together with a few well-tested extensions.

Physical Description

212 p.

Notes

OSTI as DE98052501

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  • Other Information: PBD: Oct 1997

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  • Other: DE98052501
  • Report No.: ORNL/TM--13221
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/582265 | External Link
  • Office of Scientific & Technical Information Report Number: 582265
  • Archival Resource Key: ark:/67531/metadc692014

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  • October 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 1, 2016, 2:35 p.m.

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Rhoades, W.A. & Simpson, D.B. The TORT three-dimensional discrete ordinates neutron/photon transport code (TORT version 3), report, October 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc692014/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.