A first collision source method for ATTILA, an unstructured tetrahedral mesh discrete ordinates code

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Description

A semi-analytic first collision source method is developed for the transport code, ATTILA, a three-dimensional, unstructured tetrahedral mesh, discrete-ordinates code. This first collision source method is intended to mitigate ray effects due to point sources. The method is third-order accurate, which is the same order of accuracy as the linear-discontinuous spatial differencing scheme used in ATTILA. Numerical results are provided to demonstrate the accuracy and efficiency of the first collision source method.

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7 p.

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Wareing, T.A.; Morel, J.E. & Parsons, D.K. December 1, 1998.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 21 times . More information about this article can be viewed below.

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Description

A semi-analytic first collision source method is developed for the transport code, ATTILA, a three-dimensional, unstructured tetrahedral mesh, discrete-ordinates code. This first collision source method is intended to mitigate ray effects due to point sources. The method is third-order accurate, which is the same order of accuracy as the linear-discontinuous spatial differencing scheme used in ATTILA. Numerical results are provided to demonstrate the accuracy and efficiency of the first collision source method.

Physical Description

7 p.

Notes

INIS; OSTI as DE99000616

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  • Radiation protection and shielding topical meeting: technologies for the new century, Nashville, TN (United States), 19-23 Apr 1998

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  • Other: DE99000616
  • Report No.: LA-UR--98-1373
  • Report No.: CONF-980403--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 296754
  • Archival Resource Key: ark:/67531/metadc688571

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  • December 1, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • March 2, 2016, 1:12 p.m.

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Wareing, T.A.; Morel, J.E. & Parsons, D.K. A first collision source method for ATTILA, an unstructured tetrahedral mesh discrete ordinates code, article, December 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc688571/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.