CCC-0582: NITRAN, Neutron Transport Code System Based on Anistropic Scattering

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CCC-0582 NITRAN. (Abstract last modified 08-JAN-2002)

NITRAN, Neutron Transport Code System Based on Anistropic Scattering

Abstract Table of Contents:

OPERATING SYSTEM

OTHER RESTRICTIONS

1. NAME OR DESIGNATION OF PROGRAM - NITRAN

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 NITRAN CCC-0582/01 Arrived

Machines used: Package-ID Orig.Computer Test Computer CCC-0582/01 FACOM M-380

3. DESCRIPTION OF PROGRAM OR FUNCTION - NITRAN is a neutron transport code system based on a rigorous treatment of anisotropic scattering. Double differential cross sections are used (see DLC-123/DDXLIB).

4. METHODS - NITRAN includes DDXS, a nuclear data processing code used to generate group constants of the double differential type. The input to DDXS can be ENDF/B-IV, ENDF/B-VI or JENDL-3 cross sections.
In the NITRAN calculation, angular dependent transfer cross sections (kernels) are used as scattering cross sections. They are obtained from integrating the product of the double differential neutron emission cross sections and the angular transfer probabilities. The transport codes are based on discrete ordinates. To solve the one-dimensional (slab and sphere) transport, NITRAN-1 is used. For two dimensions, NITRAN-2 is used. For time- dependent problems NITRAN-2D is included.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - None noted.

6. TYPICAL RUNNING TIME - None noted.

7. UNUSUAL FEATURES -

8. RELATED OR AUXILIARY PROGRAMS -
AUXILIARY ROUTINES:
DDXS: Double differential cross section generation program.
NITRAN-1: One-dimensional transport code for spherical and slab geometries
NITRAN-2: Two-dimensional transport for slab (x-y) geometry
NITRAN-TD: One-dimensional transport code for spherical geometry for time dependent problems.

9. STATUS
CCC-0582/01: 08-JAN-2002 Masterfiled Arrived

10. REFERENCES -
CCC-0582/01:
- F.Maekawa;
"NITRAN Manual,"
OKTAVIAN Report A-90-01 (March 1990)
- A.Takahashi, D.Rusch;
"Fast Rigorous Numerical Method for the Solution of the
Anisotropic Neutron Transport Problem and the NITRAN
System for Fusion Neutronics Application, Part II,
"KfK 2832/II, KFK (October 1979).

11. HARDWARE REQUIREMENTS - NITRAN will run on the FACOM M-380. With minor modifications, the codes can be modified to run on the IBM mainframes.

12. PROGRAMMING LANGUAGE -CCC-0582/01: FORTRAN-77

13. SOFTWARE REQUIREMENTS - NITRAN codes are written in FORTRAN 77.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS -

15. NAME AND ESTABLISHMENT OF AUTHORS -
Contributed by:
                Osaka University,
                Osaka, Japan
Developed by:
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U.S.A.

16. MATERIAL AVAILABLE -CCC-0582/01:
Files 1-47 belong to the DDXS code system.
(Files 1-10 comprise the FORTRAN 77 sources for DDXS.)
Files 48-71 comprise the NITRAN-1 code system
(Files 48-53 are the FORTRAN 77 sources for NITRAN01.)
Files 72-93 comprise the NITRAN-2 code system
(Files 72-76 are the FORTRAN 77 sources for NITRAN-2)
Files 94-115 comprise the NITRAN-TD code system.

17. CATEGORIES -

- F. Space
Time Kinetics, Coupled Neutronics Hydrodynamics Thermodynamics

Keywords: DISCRETE ORDINATE METHOD, KERNELS, MULTIGROUP, NEUTRON, ONE-DIMENSIONAL, SLABS, TIME-DEPENDENT, TWO-DIMENSIONAL

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