NESC1028 TRIPM.
TRIPM, Isothermal Transport and Decay of Radionuclides in Aquifer
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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| 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.
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.
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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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.
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.[ top ]
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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.
- 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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NESC1028/01
To execute test case 3 on IBM 3081K, 492K bytes of main storage are required.[ top ]
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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.
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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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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- G. Radiological Safety, Hazard and Accident Analysis
- R. Environmental and Earth Sciences
Keywords: daughter products, finite element method, ground water, radionuclide migration, soils.