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NEA-1005 MOBIDIC.

MOBIDIC, Fast Reactor Hexagonal Infinite Lattice 2 Component Fuel Pin Diffusion Coefficient

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1. NAME OR DESIGNATION OF PROGRAM:  MOBIDIC.
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2. COMPUTERS
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Program name Package id Status Status date
MOBIDIC NEA-1005/01 Tested 21-MAR-1985

Machines used:

Package ID Orig. computer Test computer
NEA-1005/01 CDC 7600 CDC CYBER 740
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3. DESCRIPTION OF PROGRAM OR FUNCTION

MOBIDIC calculates radial and axial diffusion coefficients in a fast reactor hexagonal regular infinite lattice composed of two media, fuel pins and coolant (which may be voided). A non-zero value of the buckling vector Br, Bz must  be given.
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4. METHOD OF SOLUTION

The program performs a numerical calculation of an analytical formula involving special functions and integrals.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:  Bidimensional
coolant gaps must exist.
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6. TYPICAL RUNNING TIME

The running time is mainly related to the density of the coolant. Typically it is less than 1 CPU second.
NEA-1005/01
NEA-DB executed the test case included in this package  on CDC CYBER 740 in 1.2 seconds of CPU time.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS

ASDIC calculates radial and axial diffusion coefficients in a fast reactor ASSEMBLY, and is based on similar hypotheses.
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9. STATUS
Package ID Status date Status
NEA-1005/01 21-MAR-1985 Tested at NEADB
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10. REFERENCES:
NEA-1005/01, included references:
- P. Benoist:
  A Simple Model for the Calculation of the Sodium-Voiding Effect on
  Neutron Leakages in a Fast Reactor Lattice: I. Formalism.
  Reprint from "Nuclear Science and Engineering", 86, 22-40 (1984)
- P. Benoist and T. Duracz:
  A Simple Model for the Calculation of the Sodium-Voiding Effect on
  Neutron Leakages in a Fast Reactor Lattice:
  II. Numerical Results for Hexagonal Lattices.
  Reprint from "Nuclear Science and Engineering", 86, 41-46 (1984)
- P. Benoist and T. Duracz:
  Notice d'Exploitation du Programme MOBIDIC.
- P. Benoist and T. Duracz:
  User's Manual for MOBIDIC Code.  (1984)
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11. MACHINE REQUIREMENTS

To run the test case on CDC CYBER 740, 63,300 (octal) words of main storage (CM) are required.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1005/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

SCOPE 2.
NEA 1005/01: The test case was run on CDC CYBER 740 under NOS 1.4-531.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

         P. Benoist and T. Duracz
         C.E.N. Saclay
         France
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16. MATERIAL AVAILABLE
NEA-1005/01
File name File description Records
NEA1005_01.003 INFORMATION FILE 32
NEA1005_01.004 JCL TO RUN TEST CASE 6
NEA1005_01.005 MOBIDIC SOURCE PROGRAM 873
NEA1005_01.006 INPUT DATA OF TEST CASE 3
NEA1005_01.007 PRINTED OUTPUT OF TEST CASE 56
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17. CATEGORIES
  • C. Static Design Studies
  • H. Heat Transfer and Fluid Flow

Keywords: buckling, cell calculation, fast reactors, neutron transport theory.