Computer Programs
CCC-0547 DANTSYS3.0
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CCC-0547 DANTSYS3.0

DANTSYS3.0, 1-D, 2-D, 3-D MultiGroup Discrete Ordinate Method Transport

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1. NAME OR DESIGNATION OF PROGRAM

DANTSYS3.0.

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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.
Program name Package id Status Status date
DANTSYS3.0 CCC-0547/07 Tested 22-APR-2002
DANTSYS3.0 CCC-0547/08 Tested 05-NOV-2003

Machines used:

Package ID Orig. computer Test computer
CCC-0547/07 Many Computers RISC 6000
CCC-0547/08 Linux-based PC,UNIX W.S.,SUN W.S.,HP W.S.,SGI W.S. Linux-based PC
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3. DESCRIPTION OF PROGRAM OR FUNCTION

CCC-707/ PARTISN (PARallel, TIme-Dependent SN) is the evolutionary successor to DANTSYS and runs on a variety of computer platforms. User input and cross section formats are very similar to that of DANTSYS, and the LANL developers recommend the use of PARTISN.

 

DANTSYS replaces TWODANT-SYS and includes five major codes. ONEDANT solves the one dimensional multigroup transport equation in plane, cylindrical, spherical and two-angle plane geometries. TWODANT solves the two-dimensional multigroup transport equation in x-y, r-z, and r-theta geometries. TWOHEX solves the two-dimensional multigroup transport equation on equilateral triangular meshes in the x, y plane. THREEDANT solves the three-dimensional multigroup transport equation in x-y-z and r-z-theta geometries. TWODANT/GQ solves the two-dimensional transport equation in x-y and r-z geometries on general quadrilaterals. DANTSYS accepts the basic multigroup cross sections for isotopes, in either of the standard interface files (ISOTXS or GRUPXS) or in a card-image library whose form is referred to as Los Alamos, ANISN, or FIDO. PSR-317/TRANSX2.15 will translate MATXS libraries into these formats. ONEDANT, TWODANT and TWOHEX were included in TWODANT-SYS, THREEDANT and TWODANT/GQ were added to the package in August 1995 with the first public release of DANTSYS. In March 1997 subroutines perr and tolcm were modified to correct a problem of overfilling a string (SITOP).

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4. METHODS

ONEDANT, TWODANT, TWODANT/GQ and THREEDANT use the discrete ordinates approximation for treating the angular variation of the particle distributions. The diamond difference scheme is used for phase space discretization. In TWODANT and THREEDANT there is an option to use the adaptive weighted diamond method. Both inner and outer iterations are accelerated using the diffusion synthetic acceleration method. TWOHEX uses the discrete ordinates form for treating the angular variation of the particle distribution, and a nodal scheme is used for phase space discretization. Both inner and outer iterations are accelerated using the Chebyshev acceleration method.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The codes are variably dimensioned with a flexible, sophisticated data management and transfer capability.

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6. TYPICAL RUNNING TIME

Running time for each solver is directly related to problem size and the platform bing used. In ONEDANT a modest sized problem of 30 groups and 100 mesh points runs in less than 2 seconds on a CRAY-YMP. In TWODANT a 31 x 60 mesh, S4, 4 group problem takes 7 seconds on the YMP. In THREEDANT a 32 x 32 x 20 mesh, S8, 4 group problem takes 52 seconds to converge on a YMP and 5 minutes on an IBM RS/6000/590. A four group calculation of the eigenvalue of a midplane whole core model of the Fast Test Reactor took about 20 seconds on a YMP.

CCC-0547/07
A few minutes for the test case provided.

CCC-0547/08
A few minutes for the test case provided.
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9. STATUS
Package ID Status date Status
CCC-0547/07 22-APR-2002 Tested at NEADB
CCC-0547/08 05-NOV-2003 Tested at NEADB
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10. REFERENCES

R.D. O'Dell:
Standard Interface Files and Procedures for Reactor Physics Codes,
Version IV
Los Alamos Scientific Laboratory report LA-6941-MS (September 1977)

CCC-0547/07, included references:
- R.E. Alcouffe et al.:
DANTSYS: A Diffusion Accelerated Neutral Particle Transport Code System
LA-12969-M (June 1995)
CCC-0547/08, included references:
- R.E. Alcouffe et al.:
DANTSYS: A Diffusion Accelerated Neutral Particle Transport Code System
LA-12969-M (June 1995)
- DANTSYS3.0 Modification (March 17, 1997)
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11. HARDWARE REQUIREMENTS

The code runs on Cray YMP, SUN Sparc Station IPX, IBM RS/6000 Model 590, Hewlett Packard 9000 Model 735, and Silicon Graphics-cpu IP22-mips.

CCC-0547/07
At the NEA DB the program was tested on an IBM RS/6000 7043-260.

CCC-0547/08
At the NEA DB the code was tested on a Dell PE 1650, INTEL BI-P3 1400 MHz.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
CCC-0547/07 FORTRAN+C
CCC-0547/08 FORTRAN+C
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13. SOFTWARE REQUIREMENTS

DANTSYS requires a Fortran 77 compiler; a C-language preprocessor (cpp); a C-compiler (cc); and GMAKE (GnuMake from Free Software Foundation). Some compiler versions on the various platforms are deficient in the sense that either the code will not compile or else bad assembly code is generated. We list the operating systems and Fortran compilers under which the code met RSICC’s QA requirements.

  1. CRAY-(UNICOS 7.0.6.1/CF77-RELEASE 6.0.3.11)

  2. SUN-(SUNOS 4.1.2/F77 Version 2.0.1)

  3. IBM RS/6000-(AIX 2.3/XLF RELEASE 03.02.0002.0001)

  4. Hewlett Packard 9000-(HP-UX A.09.05/F77-HP UX10.0)

  5. Silicon Graphics-(IRIX 5.2/F77 RELEASE 5.2).

CCC-0547/07
At the NEA DB, the code was tested on UNIX AIX version 4.3 with GNU gcc et g77 compiler.

CCC-0547/08
At the NEA DB the code was tested on Red Hat Linux 7.3 with the Lahey/Fujitsu Fortran 95 Linux PRO version 6.1 compiler.
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15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by:  Radiation Safety Information Computational Center

                 Oak Ridge National Laboratory

                 Oak Ridge, TN, USA

 

Developed by:    Los Alamos National Laboratory

                 Los Alamos, NM, USA

 

version CCC-0547/08 contributed by:
                 Mr. Cornelius H. M. BROEDERS

                 Karlsruhe Institut Für Technologie - Institute for Reactor Safety

                 P.O. Box 3640

                 76021 Karlsruhe, Germany

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16. MATERIAL AVAILABLE
CCC-0547/07
README      Information file
README.2    Information file
DANT        Source code
SENDOUTPUT  Output file
SHORTSENDTC Test problem
DANSTYS.UPD Updated tolcm.F & perr.F srces

CCC-0547/08
DANTSYS.UPD Information on updated tolcm.F & perr.F sources
README      Information file
README.2    Information file
shortsendtc Test problem input data
inp_test    Test problem input data
\dant       Directory with DANT source code  
\sendoutput test problem output data produced on different computers
Report LA-12969-M (June 1995)  Electronic documentation
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17. CATEGORIES
  • C. Static Design Studies
  • J. Gamma Heating and Shield Design

Keywords: discrete ordinate method, multigroup, one-dimensional, shielding, transport theory, two-dimensional.