IAEA1241 DNTM/R2D.

DNTM/R2D, 2-D Transport in X-Y Geometry

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: DNTM/R2D.

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2. COMPUTERS

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Program name	Package id	Status	Status date
DNTM/R2D	IAEA1241/01	Tested	27-DEC-1995

Machines used:

Package ID	Orig. computer	Test computer
IAEA1241/01	CDC 6400	DEC VAX 6000

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3. DESCRIPTION OF PROGRAM OR FUNCTION

DNTM/R2D solves the neutron transport equation in two-dimensional X-Y geometry by the discrete nodal transport method. Source and eigenvalue problems can be solved. As compared to the two-dimensional nodal transport code DNTM/2D, the following new improved features are included:
- Anisotropic scattering is considered. The order of anisotropic
  scattering is from P0 to P3.
- The cross section input format is the same as for ANISN. Multi-
  group cross section libraries such as DLC-37 and DLC-BUGLE-80 can
  be used.

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4. METHOD OF SOLUTION

DNTM/R2D uses the discrete nodal transport method. Anisotropic scattering is treated using Legendre expansion. Order of interior flux approximation is 2. Plane leakage approximation of surface flux is used.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Maximum number of -
        anisotropic scattering order =  3
        material composition         = 20
        energy groups                =  2
        angular quadrature           =  8
        zones                        = 30
When coarse-mesh rebalancing is used, the maximum number of coarse meshes is 12 in each direction. If the computer permits some arrays  can be enlarged to reduce the above restrictions.

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6. TYPICAL RUNNING TIME:

IAEA1241/01

NEA-DB executed the three test cases included in this package on a DEC VAX 6000-510 computer. Execution times were: case 1: 0.4 sec; case 2: 3.0 sec; case 3: 20.5 sec.

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7. UNUSUAL FEATURES OF THE PROGRAM:

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
IAEA1241/01	27-DEC-1995	Tested at NEADB

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10. REFERENCES:

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11. MACHINE REQUIREMENTS:

IAEA1241/01

NEA-DB installed the program on a DEC VAX 6000-510 computer.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
IAEA1241/01	FORTRAN-IV

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

IAEA1241/01

The test runs were made under VAX/VMS 6.1. The source codes were compiled with the DEC FORTRAN compiler version 6.2.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHORS

     Wu Hongchun and Zhu Xuehua
     Energy and Power Engineering Department
     Xi'an Jiaotong University, 710049
     P.R. of China

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16. MATERIAL AVAILABLE

IAEA1241/01

File name	File description	Records
IAEA1241_01.001	Information file	135
IAEA1241_01.002	Author's information file on input data	260
IAEA1241_01.003	DNTM/R2D source file	2288
IAEA1241_01.004	Command file to compile and link DNTM/R2D	10
IAEA1241_01.005	Command file to run DNTM/R2D	9
IAEA1241_01.006	Description of test cases	24
IAEA1241_01.007	Sample input file #1	12
IAEA1241_01.008	Sample input file #2	15
IAEA1241_01.009	Sample input file #3	26
IAEA1241_01.010	Sample output file #1	182
IAEA1241_01.011	Sample output file #2	320
IAEA1241_01.012	Sample output file #3	366
IAEA1241_01.013	Command file to run test case #1	8
IAEA1241_01.014	Command file to run test case #2	8
IAEA1241_01.015	Command file to run test case #3	8

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17. CATEGORIES

C. Static Design Studies

Keywords: anisotropic scattering, neutron transport equation, two-dimensional, x-y.