Parallel FE Electron-Photon Transport Analysis on 2-D Unstructured Mesh

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Description

A novel solution method has been developed to solve the coupled electron-photon transport problem on an unstructured triangular mesh. Instead of tackling the first-order form of the linear Boltzmann equation, this approach is based on the second-order form in conjunction with the conventional multi-group discrete-ordinates approximation. The highly forward-peaked electron scattering is modeled with a multigroup Legendre expansion derived from the Goudsmit-Saunderson theory. The finite element method is used to treat the spatial dependence. The solution method is unique in that the space-direction dependence is solved simultaneously, eliminating the need for the conventional inner iterations, a method that is well ... continued below

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13 p.

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Drumm, C.R. & Lorenz, J. March 2, 1999.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

A novel solution method has been developed to solve the coupled electron-photon transport problem on an unstructured triangular mesh. Instead of tackling the first-order form of the linear Boltzmann equation, this approach is based on the second-order form in conjunction with the conventional multi-group discrete-ordinates approximation. The highly forward-peaked electron scattering is modeled with a multigroup Legendre expansion derived from the Goudsmit-Saunderson theory. The finite element method is used to treat the spatial dependence. The solution method is unique in that the space-direction dependence is solved simultaneously, eliminating the need for the conventional inner iterations, a method that is well suited for massively parallel computers.

Physical Description

13 p.

Notes

INIS; OSTI as DE00004235

Medium: P; Size: 13 pages

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  • International Conference on Mathematics and Computation in Nuclear Applications, Madrid (ES), 09/27/1999--09/30/1999

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  • Report No.: SAND99-0511C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 4235
  • Archival Resource Key: ark:/67531/metadc685153

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Office of Scientific & Technical Information Technical Reports

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  • March 2, 1999

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 7, 2017, 1:09 p.m.

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Drumm, C.R. & Lorenz, J. Parallel FE Electron-Photon Transport Analysis on 2-D Unstructured Mesh, article, March 2, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc685153/: accessed May 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.