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190514e19971231||| o| f1|||||eng|d |
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|a (TOE)ost332743
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|a (TOE)332743
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|a TOE
|c TOE
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|a GDWR
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|a 66
|2 edbsc
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|a 99
|2 edbsc
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|a E 1.99: conf-9709141--proc
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|a E 1.99:sand--98-1591
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|a E 1.99: conf-9709141--proc
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| 088 |
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|a conf-9709141--proc
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| 088 |
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|a sand--98-1591
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| 245 |
0 |
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|a 3D unstructured-mesh radiation transport codes
|h [electronic resource]
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| 260 |
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|a Albuquerque, N.M. :
|b Sandia National Laboratories. ;
|a Oak Ridge, Tenn. :
|b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
|c 1997.
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| 300 |
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|a pp. 41 :
|b digital, PDF file.
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| 336 |
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|a text
|b txt
|2 rdacontent.
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| 337 |
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|a computer
|b c
|2 rdamedia.
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| 338 |
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|a online resource
|b cr
|2 rdacarrier.
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| 500 |
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|a Published through SciTech Connect.
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| 500 |
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|a 12/31/1997.
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| 500 |
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|a "sand--98-1591"
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| 500 |
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|a " conf-9709141--proc."
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| 500 |
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|a "DE99000778"
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| 500 |
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|a 5. joint Russian-American computational mathematics conference, Albuquerque, NM (United States), 2-5 Sep 1997.
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| 500 |
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|a Morel, J. [Los Alamos National Lab., NM (United States)]
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| 520 |
3 |
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|a Three unstructured-mesh radiation transport codes are currently being developed at Los Alamos National Laboratory. The first code is ATTILA, which uses an unstructured tetrahedral mesh in conjunction with standard Sn (discrete-ordinates) angular discretization, standard multigroup energy discretization, and linear-discontinuous spatial differencing. ATTILA solves the standard first-order form of the transport equation using source iteration in conjunction with diffusion-synthetic acceleration of the within-group source iterations. DANTE is designed to run primarily on workstations. The second code is DANTE, which uses a hybrid finite-element mesh consisting of arbitrary combinations of hexahedra, wedges, pyramids, and tetrahedra. DANTE solves several second-order self-adjoint forms of the transport equation including the even-parity equation, the odd-parity equation, and a new equation called the self-adjoint angular flux equation. DANTE also offers three angular discretization options: $S{_}n$ (discrete-ordinates), $P{_}n$ (spherical harmonics), and $SP{_}n$ (simplified spherical harmonics). DANTE is designed to run primarily on massively parallel message-passing machines, such as the ASCI-Blue machines at LANL and LLNL. The third code is PERICLES, which uses the same hybrid finite-element mesh as DANTE, but solves the standard first-order form of the transport equation rather than a second-order self-adjoint form. DANTE uses a standard $S{_}n$ discretization in angle in conjunction with trilinear-discontinuous spatial differencing, and diffusion-synthetic acceleration of the within-group source iterations. PERICLES was initially designed to run on workstations, but a version for massively parallel message-passing machines will be built. The three codes will be described in detail and computational results will be presented.
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| 650 |
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7 |
|a Three-Dimensional Calculations.
|2 local.
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| 650 |
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7 |
|a Radiation Transport.
|2 local.
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| 650 |
|
7 |
|a Mesh Generation.
|2 local.
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| 650 |
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7 |
|a A Codes.
|2 local.
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| 650 |
|
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|a Discrete Ordinate Method.
|2 local.
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| 650 |
|
7 |
|a Multigroup Theory.
|2 local.
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| 650 |
|
7 |
|a D Codes.
|2 local.
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| 650 |
|
7 |
|a Finite Element Method.
|2 local.
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| 650 |
|
7 |
|a Spherical Harmonics Method.
|2 local.
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| 650 |
|
7 |
|a P Codes.
|2 local.
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| 650 |
|
7 |
|a Physics.
|2 edbsc.
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| 650 |
|
7 |
|a Mathematics, Computers, Information Science, Management, Law, Miscellaneous.
|2 edbsc.
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| 710 |
2 |
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|a Sandia National Laboratories.
|4 res.
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| 710 |
1 |
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information.
|4 dst.
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| 856 |
4 |
0 |
|u http://www.osti.gov/scitech/biblio/332743
|z Online Access (via OSTI)
|
| 907 |
|
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|a .b105244855
|b 03-09-23
|c 05-20-19
|
| 998 |
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|a web
|b 05-20-19
|c f
|d m
|e p
|f eng
|g
|h 0
|i 1
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| 956 |
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|a Information bridge
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|s c4363a2c-5742-59ed-a84e-d142835b8cb7
|
| 952 |
f |
f |
|p Can circulate
|a University of Colorado Boulder
|b Online
|c Online
|d Online
|e E 1.99: conf-9709141--proc
|h Superintendent of Documents classification
|i web
|n 1
|
