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[Program Service | Recent programs]

CCC-0180 TDA. (Abstract last modified 27-APR-1983)


TDA, Time-Dependent 1-D Neutron Transport, Gamma Transport by ANISN Method in Slab, Spherical, Cylindrical Geometry

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Abstract Table of Contents:

NAME | COMPUTER | PROBLEM | SOLUTION | RESTRICTIONS | CPU | FEATURES | AUXILIARIES | STATUS | REFERENCES | REQUIREMENTS | LANGUAGE | OPERATING SYSTEM | OTHER RESTRICTIONS | AUTHOR | MATERIAL | CATEGORIES |

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1. NAME OR DESIGNATION OF PROGRAM - TDA.


2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below. A password and special authorization is required.

Explanation of the status codes.

Program-name         Package-ID  Status
TDA                  CCC-0180/01 Obsolete
TDA                  CCC-0180/02 Obsolete
TDA                  CCC-0180/03 Obsolete
TDA                  CCC-0180/04 Tested

Machines used:
Package-ID     Orig.Computer                       Test Computer
CCC-0180/04    IBM 370/168                         IBM 370/168

3. NATURE OF PHYSICAL PROBLEM SOLVED - TDA (Time-Dependent ANISN) solves the one-dimensional time- dependent Boltzmann transport equation for neutrons and/or gamma- rays in slab, sphere or cylindrical geometries. Delayed neutron and other time-dependent effects are not considered in the present version.
A choice of two types of sources and one initial condition specification is given (A. Space and energy distributed source with a step function time distribution. B. Analytical first collision source).


4. METHOD OF SOLUTION - TDA is based on the steady-state SN code ANISN for reasons of stability and generality. The weighted difference equations are used.


5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - Limited only by available main storage.


6. TYPICAL RUNNING TIME - The sample problem (S8, P1, 16 neutron and 10 gamma groups, 20 mesh points, precision = 1.0E-05) took 10 seconds per time step on IBM 370/165.

CCC-0180/04:

 NEA-DB ran the test case on IBM 370/168 in 4 minutes. 


7. UNUSUAL FEATURES OF THE PROGRAM -


8. RELATED AND AUXILIARY PROGRAMS -


9. STATUS
CCC-0180/01: 30-MAY-1983 Obsolete
CCC-0180/02: 17-AUG-2001 Obsolete
CCC-0180/03: 23-AUG-2001 Obsolete
CCC-0180/04: 27-APR-1983 Tested at NEADB


10. REFERENCES  - 
- W. W. Engle:
  Informal Description of the IBM 360 version of TDA
  ORNL (1973).
- R. Douglas O'Dell and Raymond E. Alcouffe:
Transport Calculations for Nuclear Analyses: Theory and Guidelines for Effective Use of Transport Codes
  LA-10983-MS and UC-32 (September 1987).
CCC-0180/04:
- S.A. Dupree et al.:
  Time Dependent Neutron and Photon Transport Calculations Using the
  Method of Discrete Ordinates.
  LA-4557,(ORNL-4662)(SAI-70-125)(May 1971).


11. MACHINE REQUIREMENTS - Maximum 5 external disk or tape files plus reader and printer. User should supply clock routine.

CCC-0180/04:

 Main storage requirement for test case is 300 kbytes. 


12. PROGRAMMING LANGUAGE(S) USED -
CCC-0180/04: FORTRAN-IV 


13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED - IBM
360/370 with FORTRAN-H compiler.

CCC-0180/04:

The test case was executed under OS370/081 using the FORTRAN-H-EXTENDED compiler.


14. ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS -
Time limit after which the TDA run is stopped and fluxes are saved on disk or tape can be specified on the header card.
 Only FFREAD (free field read) input subroutine is machine- dependent.


15. NAME AND ESTABLISHMENT OF AUTHOR -
         Oak Ridge National Laboratory
         Oak Ridge, Tennessee, U. S. A.


16. MATERIAL AVAILABLE -
CCC-0180/04:
CCC0180_04.003    TDA INFORMATION FILE                               40 records
CCC0180_04.004    TDA SOURCE PROGRAM (FORTRAN-4)                   2555 records
CCC0180_04.005    TDA JCL                                            20 records
CCC0180_04.006    TDA INPUT FOR TEST CASE                           136 records
CCC0180_04.007    TDA OUTPUT OF TEST CASE                          4058 records


17. CATEGORIES  - 

- F. Space
Time Kinetics, Coupled Neutronics Hydrodynamics Thermodynamics


Keywords: CYLINDERS, DIFFUSION, DISCRETE ORDINATE METHOD, GAMMA RADIATION, NEUTRON TRANSPORT THEORY, ONE-DIMENSIONAL, SLABS, SPHERES, TIME DEPENDENCE

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