Published 1998
| Version v1
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A first collision source method for ATTILA, an unstructured tetrahedral mesh discrete ordinates code
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
Availability note (English)
Available from INIS in electronic form; ALSO AVAILABLE FROM OSTI AS DE99000616; NTIS; US GOVT. PRINTING OFFICE DEP.
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Additional details
Publishing Information
- Imprint Pagination
- 10 p.
- Report number
- LA-UR--98-1373
Conference
- Title
- technologies for the new century
- Acronym
- Radiation protection and shielding topical meeting
- Dates
- 19-23 Apr 1998
- Place
- Nashville, TN (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30031828
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S99: GENERAL AND MISCELLANEOUS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- A CODES; ACCURACY; DISCRETE ORDINATE METHOD; FINITE ELEMENT METHOD; MESH GENERATION; NEUTRON TRANSPORT THEORY; POINT SOURCES; THREE-DIMENSIONAL CALCULATIONS
- Descriptors DEC
- CALCULATION METHODS; COMPUTER CODES; NUMERICAL SOLUTION; RADIATION SOURCES; TRANSPORT THEORY
Optional Information
- Contract/Grant/Project number
- Contract W-7405-ENG-36
- Funding organization
- USDOE, Washington, DC (United States)
- Secondary number(s)
- CONF-980403--