last modified: 29-JAN-1990 | catalog | categories | new | search |

NEA-1067 DIFMOD.

DIFMOD, Radionuclide Leaching and Cement Corrosion in Brine

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1. NAME OR DESIGNATION OF PROGRAM:  DIFMOD.
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2. COMPUTERS
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Program name Package id Status Status date
DIFMOD NEA-1067/01 Tested 29-JAN-1990

Machines used:

Package ID Orig. computer Test computer
NEA-1067/01 IBM 3081 IBM 3083
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3. DESCRIPTION OF PROGRAM OR FUNCTION

The theoretical model was designed to calculate the leaching of radionuclides and the corrosion of cemented waste forms in contact with water or brine. The model computes both the behaviour of specimens in laboratory- scale experiments and provides a forecast of the behaviour of waste  forms in the case of an accidental drowning of a repository.
The mathematical formalism describes leaching and corrosion on the basis of diffusion and dissolution processes and of the chemical reactions by the corrosion.
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4. METHOD OF SOLUTION:  Crank-Nicolson difference formalism.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:  1000 spatial increments.
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6. TYPICAL RUNNING TIME:  Depends on the values of the diffusion constants.
NEA-1067/01
NEA-DB ran the test case included in this package on an IBM 3083 computer. The CPU time required for the different cases varied between 2.5 and 222 seconds.
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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
NEA-1067/01 29-JAN-1990 Tested at NEADB
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10. REFERENCES:
NEA-1067/01, included references:
- B. Kienzler and R.H. Koester:
  Experimental and Theoretical Investigations of Corrosion
  Mechanisms in Cemented Waste Forms.
  Reprint from "Nuclear Technology" Vol. 71, N. 12 (1985), 590-596
- B. Kienzler:
  Mathematical Modelling of the Corrosion and Leaching Behaviour
  of Cemented Waste Forms.
  KfK-3905  (May 1985) (in German)
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11. MACHINE REQUIREMENTS:
NEA-1067/01
Main storage requirements for execution on IBM 3083 are 940K bytes.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1067/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  MVS/SP1.3 - JES3.
NEA-1067/01
MVS/XA (IBM 3083).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

          B. Kienzler
          Kernforschungszentrum Karlsruhe
          Institut fuer Nukleare Entsorgungstechnik
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16. MATERIAL AVAILABLE
NEA-1067/01
File name File description Records
NEA1067_01.001 Infomation file 129
NEA1067_01.002 DIFMOD Fortran-77 source 3943
NEA1067_01.003 Mathematical routine DDGT3 source 94
NEA1067_01.004 ZEIT, JOBINF dummy routines 4
NEA1067_01.005 Sample data 1 20
NEA1067_01.006 Sample data 2 20
NEA1067_01.007 Sample data 3 20
NEA1067_01.008 Sample data 4 20
NEA1067_01.009 Sample data 5 20
NEA1067_01.010 Sample data 6 20
NEA1067_01.011 Sample data 7 20
NEA1067_01.012 Sample data 8 20
NEA1067_01.013 Sample data 9 18
NEA1067_01.014 Sample data 10 18
NEA1067_01.015 JCL used at NEA Data Bank 33
NEA1067_01.016 JCL procedures used at NEA Data Bank 43
NEA1067_01.017 Sample JCL from the author 44
NEA1067_01.018 Output of sample problem 1 to 10 13310
NEA1067_01.019 Author's output for Sample problem 9 2357
NEA1067_01.020 Author's output for Sample problem 10 3652
NEA1067_01.021 Plotting program source 526
NEA1067_01.022 Sample data for plotting program 50
NEA1067_01.023 Sample JCL for plotting program from author 25
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17. CATEGORIES
  • R. Environmental and Earth Sciences

Keywords: chemical reactions, concretes, corrosion, radioactive effluents, radioactive waste storage, radionuclide migration.