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NESC1028 TRIPM.

TRIPM, Isothermal Transport and Decay of Radionuclides in Aquifer

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1. NAME OR DESIGNATION OF PROGRAM:  TRIPM.
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2. COMPUTERS
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Program name Package id Status Status date
TRIPM NESC1028/01 Tested 24-MAY-1985

Machines used:

Package ID Orig. computer Test computer
NESC1028/01 IBM 370 series IBM 3081
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3. DESCRIPTION OF PROGRAM OR FUNCTION

TRIPM is a mathematical model designed to predict the transport of radionuclides and their decay products in a saturated-unsaturated vertical plane of a phreatic aquifer under isothermal conditions. The model is composed of two modules: the first calculates the pressure distribution in the domain of interest, enabling one to compute the velocities and soil  moistures; the second calculates the migration of the various species by taking into account the major processes associated with the transport phenomena of a dissolved substance in porous media, i.e. advection, mechanical dispersion, molecular diffusion, radio- active decay and sorption. The influence of soil-water pH on the distribution coefficient is also considered. The first module may be used independently of the second.
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4. METHOD OF SOLUTION

The two-dimensional finite-element method used  in TRIPM is based on the weighted residual technique. The model can  accept two types of elements, quadrilateral and triangular. In the application of the method, the flow equation, which has nonlinear coefficients is solved by Bubnov-Galerkin type method, using an iterative technique with a backward-difference scheme coupled with a mass lumping of the coefficients of the time-derivative term. The solute equation is solved by a Petrov-Galerkin type method using a Crank-Nicolson scheme.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

TRIPM can accept only isoparametric linear quadrilateral and triangular elements.
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6. TYPICAL RUNNING TIME

NESC executed the five sample problems in 6,  4, 1, 1, and 18 CPU minutes, respectively, on an IBM3033 and IBM370/195.
NESC1028/01
NEA-DB executed test case 3 included in the package on  IBM 3081K in 19.89 seconds of CPU time.
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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
NESC1028/01 24-MAY-1985 Tested at NEADB
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10. REFERENCES

- A.B. Gureghian, B.R. Stitt, L.P. Sanathanan,
  Calculation of Unsatured Hydraulic Conductivity,
  ANL/EIS-14, June 1982.
- TRIPM, NESC No. 1028, TRIPM Tape Description, Implementation
  Information, and Sample Problem Output,
  National Energy Software Center Note 84-24, May 24, 1983.
NESC1028/01, included references:
- A. Berge Gureghian:
  TRIPM: A Two-Dimensional Finite Element Model for the Simultaneous
  Transport of Water and Reacting Solutes Through Saturated and
  Unsaturated Porus Media.
  ONWI-465  (July 1983)
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11. MACHINE REQUIREMENTS

900K bytes of memory are required to execute  the largest sample problem.
NESC1028/01
To execute test case 3 on IBM 3081K, 492K bytes of main storage are required.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC1028/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  OS/MVT (IBM370),  MVS (IBM3033).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

The user must properly DIMENSION the BAND, EANDP, and BANDG arrays in the MAIN routine for each TRIPM problem. Generally, the user will be able to determine the proper values for a simple mesh configuration; however, for an elaborate mesh the user can obtain the proper values from TRIPM output by an abbreviated run, if necessary.
To produce graphic output, TRIPM uses the Integrated Software Systems Corporation's (ISSCO) proprietary graphics software product, DISSPLA.
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15. NAME AND ESTABLISHMENT OF AUTHORS

         A.B. Gureghian
         Battelle Project Management Division
         505 King Avenue
         Columbus, Ohio 43201
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16. MATERIAL AVAILABLE
NESC1028/01
File name File description Records
NESC1028_01.003 INFORMATION FILE 79
NESC1028_01.004 TRIPM SOURCE PROGRAM (CARD IMAGES) 6356
NESC1028_01.005 TRIPM SOURCE PROGRAM (IN IEBUPDTE FORMAT) 6448
NESC1028_01.006 JCL TO RUN TEST CASES 143
NESC1028_01.007 TRIPM TEST CASE INPUT DATA 443
NESC1028_01.008 TRIPM TEST CASE PRINTED OUTPUT 3034
NESC1028_01.009 TRIPM ORIGINAL TEST CASE 1 INPUT DATA 719
NESC1028_01.010 TRIPM ORIGINAL TEST CASE 2 INPUT DATA 1075
NESC1028_01.011 TRIPM ORIGINAL TEST CASE 3 INPUT DATA 448
NESC1028_01.012 TRIPM ORIGINAL TEST CASE 3A INPUT DATA 448
NESC1028_01.013 TRIPM ORIGINAL TEST CASE 4 INPUT (UNIT 5) 1132
NESC1028_01.014 TRIPM ORIGINAL TEST CASE 4 INPUT (UNIT 4) 224
NESC1028_01.015 LIST OF VARIABLES 1579
NESC1028_01.016 TRIPM ORIGINAL TEST CASE 1 PRINTED OUTPUT 3347
NESC1028_01.017 TRIPM ORIGINAL TEST CASE 2 PRINTED OUTPUT 3767
NESC1028_01.018 TRIPM ORIGINAL TEST CASE 3 PRINTED OUTPUT 3363
NESC1028_01.019 TRIPM ORIGINAL TEST CASE 3A PRINTED OUTPUT 3341
NESC1028_01.020 TRIPM ORIGINAL TEST CASE 4 PRINTED OUTPUT 4214
NESC1028_01.021 ORIGINAL JCL 108
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis
  • R. Environmental and Earth Sciences

Keywords: daughter products, finite element method, ground water, radionuclide migration, soils.